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# Rationale
**Why should this feature exist?**
This feature will improve the data availability for EVM chains and L2s using go-ethereum.
Firehose is a new technology developed by StreamingFas…
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PropellerHeads need this.
Definition of done done:
- [x] Reference documentation pushed to the official docs
- [x] An example repository/tutorial exists to demo the new feature.
- [x] The code has be…
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# Dependencies
#410 #411 #412
# TODO
- [ ] The module should simply be an index that outputs the keys like:
* event signature: `evsig:deadbeef`
* event address: `evaddr:123456789...…
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mindreader should publish metric to prometheus about last block successfully uploaded to s3
Mindreader head_block_drift shows if it is keeping up with blocks on chain, but not if those blocks were …
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This module should be a simple reducer:
Input: sf.ethereum.type.v2.Block
Output: array of sf.ethereum.type.v2.Log
It should only read logs that are in the headers (not in failed transaction or …
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# Specs
* This module type has no params in its input, has no "initialBlock" and no "output".
* The code for this type of module will simply return an array of strings for a given block.
Ex: input (bl…
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While running a firehose node, this warning appeared in my logs
```
Sep 22 21:29:21 firehose-eth-0 fireeth[212605]: 2023-09-22T21:29:21.546Z WARN (merger) cannot walk forked block files to delete …
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### Description
This is a follow up of #4302 see it for general description. See also https://github.com/graphprotocol/graph-node/issues/4302#issuecomment-1632714489 which could be used to implement …
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In this situation, the monitoring system needs to know that mindreader is unhealthy.
```
2022-04-30T14:54:58.080Z DEBG (merger) adding one block file {"file_name": "0016248081-20220321T085938.0-92…
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When shutting down tier 2 nodes, if they have reached `substreams-tier2-max-concurrent-requests`, tier2 doesn't stop in a timely fashion.
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INFO (substreams-tier2.tier2.metrics.emitter) receive…