feat(bigtable): expose a metric to track the number of outstanding rpcs (unary , streaming) in channel pool#2696
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sushanb merged 12 commits intogoogleapis:mainfrom Oct 29, 2025
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mutianf
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Oct 23, 2025
...oud-bigtable/src/main/java/com/google/cloud/bigtable/data/v2/stub/BigtableClientContext.java
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...e/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/ChannelPoolMetricsTracer.java
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...c/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/OutstandingRpcsMetricTracker.java
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...e/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/ChannelPoolMetricsTracer.java
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...c/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/OutstandingRpcsMetricTracker.java
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...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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| @Override | ||
| public int getOutstandingStreamingRpcs() { | ||
| return 0; |
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return outstandingStreamingRpcs.get(); ?
And maybe add a test case? I'm a little concerned that this is not caught by any tests :)
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no tests for ChannelPool. added a test
...le/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/BuiltinMetricsConstants.java
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...e/src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/ChannelPoolMetricsTracer.java
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...able/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableTransportChannelProvider.java
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mutianf
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Oct 27, 2025
| Aggregation.explicitBucketHistogram( | ||
| ImmutableList.of( | ||
| 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0, 14.0, 16.0, 18.0, 20.0, | ||
| 25.0, 30.0, 35.0, 40.0, 45.0, 50.0, 60.0, 70.0, 80.0, 90.0, 100.0, 110.0)); // Added |
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nit, remove the // Added comment in the end?
Do we need to go over 100? cause the grpc limit is 100.
Also wondering if we should have equal size for the bucket, maybe [0, 2, 4, 6, 8 ..., 100]? or [0, 5, 10, 15 .. 100]?
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i think the queuing of the stream is deep inside the http2 lib in grpc netty. so we could have more than 100 here.
...loud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelObserver.java
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...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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...able/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableTransportChannelProvider.java
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.../src/main/java/com/google/cloud/bigtable/data/v2/stub/metrics/ChannelPoolMetricsTracker.java
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...loud-bigtable/src/test/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPoolTest.java
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mutianf
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Oct 29, 2025
| } | ||
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| void checkAndSetIsAlts(ClientCall<?, ?> call) { | ||
| // TODO(populate ALTS holder) |
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nit: do we still need the TODO?
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Yes, I will add it in another PR. for now, we use false.
...le-cloud-bigtable/src/main/java/com/google/cloud/bigtable/gaxx/grpc/BigtableChannelPool.java
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mutianf
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Oct 29, 2025
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🤖 I have created a release *beep* *boop* --- ## [2.69.0](https://togithub.com/googleapis/java-bigtable/compare/v2.68.0...v2.69.0) (2025-11-17) ### Features * **bigtable:** Add internal grpc subconnections metric and add outstanding rpcs to INTERNAL_VIEW ([#2700](https://togithub.com/googleapis/java-bigtable/issues/2700)) ([e3e6e99](https://togithub.com/googleapis/java-bigtable/commit/e3e6e993ee197f897c166fb8959755db0cb9c3fc)) * **bigtable:** Expose a metric to track the number of outstanding rpcs (unary , streaming) in channel pool ([#2696](https://togithub.com/googleapis/java-bigtable/issues/2696)) ([140a1ad](https://togithub.com/googleapis/java-bigtable/commit/140a1ad81947da26c1539632ff04748dc3498d69)) * **bigtable:** Populate alts field in channel entry ([#2702](https://togithub.com/googleapis/java-bigtable/issues/2702)) ([1bfb763](https://togithub.com/googleapis/java-bigtable/commit/1bfb763e6e4fb6fe8c808abe5dbd4221d3a632c3)) * Enable ALTS hard bound token in Bigtable w/ direct access ([#2695](https://togithub.com/googleapis/java-bigtable/issues/2695)) ([d12b37d](https://togithub.com/googleapis/java-bigtable/commit/d12b37dacf8712d30be05175828999af74159819)) --- This PR was generated with [Release Please](https://togithub.com/googleapis/release-please). See [documentation](https://togithub.com/googleapis/release-please#release-please).
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expose a metric to track the number of outstanding rpcs (unary , streaming) in channel pool