Steven Zhen Wu created FLINK-9693:
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Summary: possible memory link in jobmanager retaining archived
checkpoints
Key: FLINK-9693
URL: https://issues.apache.org/jira/browse/FLINK-9693
Project: Flink
Issue Type: Bug
Components: JobManager, State Backends, Checkpointing
Environment: !image.png!!image (1).png!
Reporter: Steven Zhen Wu
Attachments: image (1).png, image.png
First, some context about the job
* Flink 1.4.1
* embarrassingly parallel: all operators are chained together
* parallelism is over 1,000
* stateless except for Kafka source operators. checkpoint size is 8.4 MB.
* set "state.backend.fs.memory-threshold" so that only jobmanager writes to S3
to checkpoint
* internal checkpoint with 10 checkpoints retained in history
Summary of the observations
* 41,567 ExecutionVertex objects retained 9+ GB of memory
* Expanded in one ExecutionVertex. it seems to storing the kafka offsets for
source operator
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