DataStream to spanner 100GB load test

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 25.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 41.16%. Comparing base (cce16ef) to head (b09b790).

:exclamation: Current head b09b790 differs from pull request most recent head ea771c7

Please upload reports for the commit ea771c7 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1624 +/- ## ============================================ - Coverage 41.27% 41.16% -0.11% - Complexity 2928 3196 +268 ============================================ Files 769 764 -5 Lines 44583 44459 -124 Branches 4769 4760 -9 ============================================ - Hits 18400 18301 -99 + Misses 24634 24617 -17 + Partials 1549 1541 -8 ``` | [Components](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=components&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [spanner-templates](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `61.39% <ø> (ø)` | | | [spanner-import-export](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `64.42% <ø> (ø)` | | | [spanner-live-forward-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `73.87% <ø> (ø)` | | | [spanner-live-reverse-replication](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `49.70% <ø> (ø)` | | | [spanner-bulk-migration](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/components?src=pr&el=component&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | `82.06% <ø> (ø)` | | | [Files](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform) | Coverage Δ | | |---|---|---| | [...he/beam/it/gcp/spanner/SpannerResourceManager.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624?src=pr&el=tree&filepath=it%2Fgoogle-cloud-platform%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fbeam%2Fit%2Fgcp%2Fspanner%2FSpannerResourceManager.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-aXQvZ29vZ2xlLWNsb3VkLXBsYXRmb3JtL3NyYy9tYWluL2phdmEvb3JnL2FwYWNoZS9iZWFtL2l0L2djcC9zcGFubmVyL1NwYW5uZXJSZXNvdXJjZU1hbmFnZXIuamF2YQ==) | `74.21% <60.00%> (+0.77%)` | :arrow_up: | | [...main/java/org/apache/beam/it/gcp/LoadTestBase.java](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624?src=pr&el=tree&filepath=it%2Fgoogle-cloud-platform%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fbeam%2Fit%2Fgcp%2FLoadTestBase.java&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform#diff-aXQvZ29vZ2xlLWNsb3VkLXBsYXRmb3JtL3NyYy9tYWluL2phdmEvb3JnL2FwYWNoZS9iZWFtL2l0L2djcC9Mb2FkVGVzdEJhc2UuamF2YQ==) | `0.00% <0.00%> (ø)` | | ... and [8 files with indirect coverage changes](https://app.codecov.io/gh/GoogleCloudPlatform/DataflowTemplates/pull/1624/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=GoogleCloudPlatform)