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Posted to issues@beam.apache.org by "Udi Meiri (JIRA)" <ji...@apache.org> on 2018/11/08 02:00:00 UTC

[jira] [Created] (BEAM-6018) Memory leak in GCSUtil.java executeBatches

Udi Meiri created BEAM-6018:
-------------------------------

             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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