Tongtong Zhu created FLINK-33588:
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Summary: Fix Flink Checkpointing Statistics Bug
Key: FLINK-33588
URL: https://issues.apache.org/jira/browse/FLINK-33588
Project: Flink
Issue Type: Bug
Components: Runtime / Checkpointing
Affects Versions: 1.17.1, 1.18.0, 1.14.6, 1.15.2, 1.17.0, 1.16.0, 1.14.5
Reporter: Tongtong Zhu
Fix For: 1.19.0, 1.18.1
When the Flink task is first started, the checkpoint data is null due to the
lack of data, and Percentile throws a null pointer exception when calculating
the percentage. After multiple tests, I found that it is necessary to set an
initial value for the statistical data value of the checkpoint when the
checkpoint data is null (i.e. at the beginning of the task) to solve this
problem.
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