Udi Meiri created BEAM-6018:
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Summary: Memory leak in GCSUtil.java executeBatches
Key: BEAM-6018
URL: https://issues.apache.org/jira/browse/BEAM-6018
Project: Beam
Issue Type: Bug
Components: io-java-gcp
Affects Versions: 2.7.0
Reporter: Udi Meiri
Assignee: Udi Meiri
In streaming pipelines there are multiple calls to moveToOutputFiles
(https://github.com/apache/beam/blob/42984a821b3e73aee2966d11d7fb436b5ff22b68/sdks/java/core/src/main/java/org/apache/beam/sdk/io/WriteFiles.java#L796).
When writing to GCS, this call uses executeBatches
(https://github.com/apache/beam/blob/279a05604b83a54e8e5a79e13d8761f94841f326/sdks/java/extensions/google-cloud-platform-core/src/main/java/org/apache/beam/sdk/util/GcsUtil.java#L551),
which wraps a thread pool in MoreExecutors.getExitingExecutorService(). This
wrapper introduces a DelayedShutdownHook which persists until the worker exits.
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