First sync was successful but the further updates doesn't be synced

toluaina / pgsync

Postgres to Elasticsearch/OpenSearch sync

https://pgsync.com

MIT License

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First sync was successful but the further updates doesn't be synced #211

Open jinserk opened 2 years ago

jinserk commented 2 years ago

PGSync version: 2.1.9

Postgres version: 11.12 (AWS RDS)

Elasticsearch version: 7.10.2

Redis version: 6.2.6

Python version: 3.9.9

Problem Description: I'm using the latest pypi pgsync in docker env. First indexing was successful but the following sync doesn't look to work.

opensearch-pgsync  | Syncing kyuluxmain Db: [6,972] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [6,978] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [6,984] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,012] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,018] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,024] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,030] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,036] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,066] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,072] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,108] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,114] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,120] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,126] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,132] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,150] => Redis: [0] => Elastic: [0] ...
opensearch-pgsync  | Syncing kyuluxmain Db: [7,152] => Redis: [0] => Elastic: [0] ...

I checked kibana and count the number of records in the index but it has not been changed.

Here is my env vars:

    environment:
      - LOG_LEVEL=INFO
      - QUERY_CHUNK_SIZE=1000
      - POLL_TIMEOUT=1
      - ELASTICSEARCH_SCHEME=https
      - ELASTICSEARCH_HOST=******
      - ELASTICSEARCH_PORT=9200
      - ELASTICSEARCH_USER=*****
      - ELASTICSEARCH_PASSWORD=*****
      - ELASTICSEARCH_TIMEOUT=100
      - ELASTICSEARCH_CHUNK_SIZE=100
      - ELASTICSEARCH_VERIFY_CERTS=false
      - ELASTICSEARCH_USE_SSL=true
      - ELASTICSEARCH_SSL_SHOW_WARN=false
      - ELASTICSEARCH_STREAMING_BULK=true
      - ELASTICSEARCH_MAX_RETRIES=10
      - PG_HOST=*****
      - PG_PORT=5432
      - PG_USER=*****
      - PG_PASSWORD=*****
      - REDIS_HOST=redis
      - REDIS_PORT=6379
      - REDIS_AUTH=*****

Is there anything I can check if the sync is working or not?

toluaina commented 2 years ago

So the db events should be equivalent to the redis events. In your case, nothing is being propagated to redis it seems. Do you use auth for redis? is this a managed redis instance. is there a firewall? Can you actually add any record to redis using the credentials in your .env?

jinserk commented 2 years ago

This is my full docker-compose.yml:

version: '3'
services:

  redis:
    image: redis:latest
    container_name: redis
    hostname: redis
    expose:
      - 6379
    command: redis-server --requirepass *****

  pgsync:
    image: private/pgsync:latest
    container_name: pgsync
    hostname: pgsync
    build:
      context: .
      dockerfile: Dockerfile.pgsync
    command: ./runserver.sh
    sysctls:
      - net.ipv4.tcp_keepalive_time=200
      - net.ipv4.tcp_keepalive_intvl=200
      - net.ipv4.tcp_keepalive_probes=5
    labels:
      org.label-schema.name: "pgsync"
      org.label-schema.description: "Postgres to elasticsearch sync"
      com.label-schema.service-type: "daemon"
    depends_on:
      - redis
    environment:
      - LOG_LEVEL=INFO
      - QUERY_CHUNK_SIZE=1000
      - POLL_TIMEOUT=1
      - ELASTICSEARCH_SCHEME=https
      - ELASTICSEARCH_HOST=*****
      - ELASTICSEARCH_PORT=9200
      - ELASTICSEARCH_USER=*****
      - ELASTICSEARCH_PASSWORD=*****
      - ELASTICSEARCH_TIMEOUT=100
      - ELASTICSEARCH_CHUNK_SIZE=100
      - ELASTICSEARCH_VERIFY_CERTS=false
      - ELASTICSEARCH_USE_SSL=true
      - ELASTICSEARCH_SSL_SHOW_WARN=false
      - ELASTICSEARCH_STREAMING_BULK=true
      - ELASTICSEARCH_MAX_RETRIES=10
      - PG_HOST=*****
      - PG_PORT=5432
      - PG_USER=*****
      - PG_PASSWORD=*****
      - REDIS_HOST=redis
      - REDIS_PORT=6379
      - REDIS_AUTH=*****

And I matched the redis password in the command of redic container and pgsync's env var REDIS_AUTH.

jinserk commented 2 years ago

And at least I can get OK from auth in redis-cli of the container:


root@redis:/data# redis-cli
127.0.0.1:6379> auth *****
OK
127.0.0.1:6379>

toluaina commented 2 years ago

One thing that certainly isn't right tis the ELASTICSEARCH_SCHEME and ELASTICSEARCH_PORT.
for https port should be 443
Although I'm not sure if this is the current problem.
Can you also run off the master branch and post the console logs.
Could be that you have a lot of records and pgsync is still processing the transaction logs.

jinserk commented 2 years ago

That's odd because the first copy of the records was successful. We have 45M records in psql db, and the first successful copy was 45,521,632 records, and now 45,521,869 records are in our db. I'm concerning the additional ~300 records are not synced after that. If the port is not mismatched, why the first trial was successful? I'll do the latest master branch and keep you posted.

toluaina commented 2 years ago

Any update on running off master. My guess is that with about 45 M records in your database, you still have pending items to go through in the replication slot.

voyc-jean commented 2 years ago

We are having the exact same issue, 35,075,199 records sync over successfully initially, but the automated sync does not work afterwards. The logs look exactly the same as that of @jinserk, the database record count increases but the Redis count stays at 0.

After investigating further, it appears as though the Redis queue is in fact being populated with changes, but PGSync still logs that there are 0 changes. Eventually the Redis server runs out of memory.

@jinserk I noticed you make use of Opensearch and RDS, as do we. Do you also use Elasticache for Redis?

jinserk commented 2 years ago

@voyc-jean No. all the sync subsystems are on our on-prem server with Docker compose env. The redis is a node on the docker system. We're going to deploy the system to AWS opensearch service as a long term goal, so we might need to test with the Elasticache Redis, but not now.

Basically we failed to figure out with pgsync, so we're testing confluent platform + kafka connectors (debezium postgresql source connector / opeansearch sync connector) now.

toluaina commented 2 years ago

I think there is something else at play here and I have not managed to reproduce it.
Essentially data goes from pgxlogs -> redis -> es
The latest version of pgsync shows the state of your pgxlog. So it would at least show how many records are pending in the xlogs.

tthanh commented 2 years ago

Same issue here, run pgsync will sync initial data successfully, but first data update in Db show this error:

2021-12-22 05:03:46.439:ERROR:pgsync.sync: Exception 'NoneType' object is not subscriptable
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 875, in sync
    self.es.bulk(self.index, docs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/elastichelper.py", line 124, in bulk
    for _ in helpers.parallel_bulk(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 472, in parallel_bulk
    for result in pool.imap(
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 868, in next
    raise value
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 144, in _helper_reraises_exception
    raise ex
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 388, in _guarded_task_generation
    for i, x in enumerate(iterable):
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 155, in _chunk_actions
    for action, data in actions:
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 714, in _payloads
    filters = self._update(
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 435, in _update
    primary_values: list = [
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 436, in <listcomp>
    payload_data[key] for key in node.model.primary_keys
TypeError: 'NoneType' object is not subscriptable
Exception in thread Thread-16:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 904, in poll_redis
    self.on_publish(payloads)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 990, in on_publish
    self.sync(self._payloads(_payloads))
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 875, in sync
    self.es.bulk(self.index, docs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/elastichelper.py", line 124, in bulk
    for _ in helpers.parallel_bulk(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 472, in parallel_bulk
    for result in pool.imap(
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 868, in next
    raise value
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 144, in _helper_reraises_exception
    raise ex
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 388, in _guarded_task_generation
    for i, x in enumerate(iterable):
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 155, in _chunk_actions
    for action, data in actions:
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 714, in _payloads
    filters = self._update(
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 435, in _update
    primary_values: list = [
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 436, in <listcomp>
    payload_data[key] for key in node.model.primary_keys
TypeError: 'NoneType' object is not subscriptable

After that, any data update will make the logs will look like this:

Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [3] => Redis: [1] => Elastic: [0] ...

It increases count in Db but not in Redis and ES

camirus27 commented 2 years ago

Same issue here, run pgsync will sync initial data successfully, but first data update in Db show this error:

2021-12-22 05:03:46.439:ERROR:pgsync.sync: Exception 'NoneType' object is not subscriptable
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 875, in sync
    self.es.bulk(self.index, docs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/elastichelper.py", line 124, in bulk
    for _ in helpers.parallel_bulk(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 472, in parallel_bulk
    for result in pool.imap(
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 868, in next
    raise value
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 144, in _helper_reraises_exception
    raise ex
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 388, in _guarded_task_generation
    for i, x in enumerate(iterable):
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 155, in _chunk_actions
    for action, data in actions:
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 714, in _payloads
    filters = self._update(
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 435, in _update
    primary_values: list = [
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 436, in <listcomp>
    payload_data[key] for key in node.model.primary_keys
TypeError: 'NoneType' object is not subscriptable
Exception in thread Thread-16:
Traceback (most recent call last):
  File "/usr/lib/python3.8/threading.py", line 932, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.8/threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 904, in poll_redis
    self.on_publish(payloads)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 990, in on_publish
    self.sync(self._payloads(_payloads))
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 875, in sync
    self.es.bulk(self.index, docs)
  File "/usr/local/lib/python3.8/dist-packages/pgsync/elastichelper.py", line 124, in bulk
    for _ in helpers.parallel_bulk(
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 472, in parallel_bulk
    for result in pool.imap(
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 868, in next
    raise value
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 144, in _helper_reraises_exception
    raise ex
  File "/usr/lib/python3.8/multiprocessing/pool.py", line 388, in _guarded_task_generation
    for i, x in enumerate(iterable):
  File "/usr/local/lib/python3.8/dist-packages/elasticsearch/helpers/actions.py", line 155, in _chunk_actions
    for action, data in actions:
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 714, in _payloads
    filters = self._update(
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 435, in _update
    primary_values: list = [
  File "/usr/local/lib/python3.8/dist-packages/pgsync/sync.py", line 436, in <listcomp>
    payload_data[key] for key in node.model.primary_keys
TypeError: 'NoneType' object is not subscriptable

After that, any data update will make the logs will look like this:

Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [1] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [2] => Redis: [1] => Elastic: [0] ...
Syncing mydata Db: [3] => Redis: [1] => Elastic: [0] ...

It increases count in Db but not in Redis and ES

Same problem here. The issues does not reproduce when schema name is public, but we need to use a different schema name. Any hints on what is causing this @toluaina ?

toluaina commented 2 years ago

@camirus27 @tthanh I feel this issue is different to the original one. Can you please create a separate issue to with as much details as you can to enable me track it better.

camirus27 commented 2 years ago

I created a new issue https://github.com/toluaina/pgsync/issues/215 for this @tthanh @toluaina

voyc-jean commented 2 years ago

@tthanh @jinserk Could either of you post the PGSync JSON schema that was used?

jinserk commented 2 years ago

@voyc-jean Sure. Here you are:

[
    {
        "database": "kyuluxmain",
        "index": "kyu-mol-211208",
        "nodes": {
            "table": "pgmols_mol",
            "label": "mols",
            "schema": "public",
            "columns": [
                "id",
                "createtime",
                "inchikey",
                "smiles",
                "mass"
            ],
            "children": [
                {
                    "table": "pgmols_molnickname",
                    "label": "nicknames",
                    "columns": [
                        "name"
                    ],
                    "relationship": {
                        "type": "one_to_many",
                        "variant": "scalar"
                    }
                },
                {
                    "table": "pgmols_molset",
                    "label": "tags",
                    "columns": [
                        "name"
                    ],
                    "relationship": {
                        "type": "one_to_many",
                        "variant": "scalar",
                        "through_tables": [
                            "pgmols_molset_mols"
                        ]
                    }
                },
                {
                    "table": "substances_substance",
                    "label": "substance",
                    "columns": [
                        "id",
                        "name"
                    ],
                    "relationship": {
                        "type": "one_to_one",
                        "variant": "object"
                    }
                },
                {
                    "table": "arithmetics_s0",
                    "label": "s0",
                    "columns": [
                        "id",
                        "absorption",
                        "emission",
                        "splitting",
                        "strength",
                        "tadfrate",
                        "fluorrate",
                        "pbht",
                        "homo",
                        "lumo",
                        "chargetransfersplitting",
                        "triplet"
                    ],
                    "relationship": {
                        "type": "one_to_one",
                        "variant": "object"
                    }
                },
                {
                    "table": "arithmetics_t1",
                    "label": "t1",
                    "columns": [
                        "id",
                        "absorption",
                        "emission",
                        "splitting",
                        "strength",
                        "tadfrate",
                        "fluorrate",
                        "pbht",
                        "homo",
                        "lumo",
                        "chargetransfersplitting",
                        "triplet"
                    ],
                    "relationship": {
                        "type": "one_to_one",
                        "variant": "object"
                    }
                }
            ]
        }
    }
]

jinserk commented 2 years ago

I'm testing pgsync with 2.1.10and found the new logs you mentioned:

opensearch-redis   | 1:M 12 Jan 2022 13:30:07.238 * 1 changes in 3600 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:30:07.238 * Background saving started by pid 19
opensearch-redis   | 19:C 12 Jan 2022 13:30:07.261 * DB saved on disk
opensearch-redis   | 19:C 12 Jan 2022 13:30:07.262 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:30:07.339 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.418 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.418 * Background saving started by pid 20
opensearch-redis   | 20:C 12 Jan 2022 13:44:47.451 * DB saved on disk
opensearch-redis   | 20:C 12 Jan 2022 13:44:47.451 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.520 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.000 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.001 * Background saving started by pid 21
opensearch-redis   | 21:C 12 Jan 2022 13:49:48.036 * DB saved on disk
opensearch-redis   | 21:C 12 Jan 2022 13:49:48.037 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.102 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.076 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.076 * Background saving started by pid 22
opensearch-redis   | 22:C 12 Jan 2022 13:54:49.096 * DB saved on disk
opensearch-redis   | 22:C 12 Jan 2022 13:54:49.097 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.176 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.082 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.083 * Background saving started by pid 23
opensearch-redis   | 23:C 12 Jan 2022 13:59:50.105 * DB saved on disk
opensearch-redis   | 23:C 12 Jan 2022 13:59:50.105 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.183 * Background saving terminated with success

Is this working as expected? The added records are not still shown on the opensearch index.

PS: I guess the "100 changes in 300 seconds" is being repeated.

PPS: No checkpoint files in the path. Is it normal?

jinserk commented 2 years ago

I'm reading the code of pgsync, and not fully understand yet, but in the pgsync/sync.py:

    with Timer():
        for document in json.load(open(config)):
            sync = Sync(document, verbose=verbose, **kwargs)
            sync.pull()
            if daemon:
                sync.receive()

I wonder if it should be

    with Timer():
        for document in json.load(open(config)):
            sync = Sync(document, verbose=verbose, **kwargs)
            if daemon:
                sync.receive()
            else:
                sync.pull()

toluaina commented 2 years ago

I'm reading the code of pgsync, and not fully understand yet, but in the pgsync/sync.py:

    with Timer():
        for document in json.load(open(config)):
            sync = Sync(document, verbose=verbose, **kwargs)
            sync.pull()
            if daemon:
                sync.receive()

I wonder if it should be

    with Timer():
        for document in json.load(open(config)):
            sync = Sync(document, verbose=verbose, **kwargs)
            if daemon:
                sync.receive()
            else:
                sync.pull()

pgsync does two passes to ensure all data in a live environment is synced and no data is missed. so we need to do both receive() and then pull() in that order

toluaina commented 2 years ago

I'm testing pgsync with 2.1.10and found the new logs you mentioned:

opensearch-redis   | 1:M 12 Jan 2022 13:30:07.238 * 1 changes in 3600 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:30:07.238 * Background saving started by pid 19
opensearch-redis   | 19:C 12 Jan 2022 13:30:07.261 * DB saved on disk
opensearch-redis   | 19:C 12 Jan 2022 13:30:07.262 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:30:07.339 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.418 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.418 * Background saving started by pid 20
opensearch-redis   | 20:C 12 Jan 2022 13:44:47.451 * DB saved on disk
opensearch-redis   | 20:C 12 Jan 2022 13:44:47.451 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:44:47.520 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.000 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.001 * Background saving started by pid 21
opensearch-redis   | 21:C 12 Jan 2022 13:49:48.036 * DB saved on disk
opensearch-redis   | 21:C 12 Jan 2022 13:49:48.037 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:49:48.102 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.076 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.076 * Background saving started by pid 22
opensearch-redis   | 22:C 12 Jan 2022 13:54:49.096 * DB saved on disk
opensearch-redis   | 22:C 12 Jan 2022 13:54:49.097 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:54:49.176 * Background saving terminated with success
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.082 * 100 changes in 300 seconds. Saving...
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.083 * Background saving started by pid 23
opensearch-redis   | 23:C 12 Jan 2022 13:59:50.105 * DB saved on disk
opensearch-redis   | 23:C 12 Jan 2022 13:59:50.105 * RDB: 0 MB of memory used by copy-on-write
opensearch-redis   | 1:M 12 Jan 2022 13:59:50.183 * Background saving terminated with success

Is this working as expected? The added records are not still shown on the opensearch index.

PS: I guess the "100 changes in 300 seconds" is being repeated.

PPS: No checkpoint files in the path. Is it normal?

My guess is that pgsync is still doing the initial sync? You should see some output in the console such as:

 - book
   |- publisher
   |- book_language
   |- author
   |   - city
   |      - country
   |         - continent
   |- language
   |- subject
    - rating
  [==================================================]  8/8  100%
  [--------------------------------------------------]  0/0    0%
 0:00:00.688371 (0.69 sec)
Syncing book Xlog: [0] => Db: [0] => Redis: [total = 0 pending = 0] => Elastic: [8] ...
Syncing book Xlog: [0] => Db: [0] => Redis: [total = 0 pending = 0] => Elastic: [8] ...
Syncing book Xlog: [0] => Db: [0] => Redis: [total = 0 pending = 0] => Elastic: [8] ...

Not seeing anything at all is unusual.

jinserk commented 2 years ago

I missed the PYTHONUNBUFFERED=1 in my docker image, so will rerun after adding it. I'll keep you posted the result. Thank you so much!

toluaina commented 2 years ago

@jinserk might be worth re runing bootstrap and then restart pgsync?

- bootstrap -t schema.json
- bootstrap schema.json
- pgsync schema.json