Genmao Yu created SPARK-27355:
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Summary: make query execution more sensitive to epoch message late
or lost
Key: SPARK-27355
URL: https://issues.apache.org/jira/browse/SPARK-27355
Project: Spark
Issue Type: Improvement
Components: Structured Streaming
Affects Versions: 3.0.0
Reporter: Genmao Yu
In SPARK-23503, we enforce sequencing of committed epochs for Continuous
Execution. In case a message for epoch n is lost and epoch (n + 1) is ready for
commit before epoch n is, epoch (n + 1) will wait for epoch n to be committed
first. With extreme condition, we will wait for `epochBacklogQueueSize` (10000
in default) epochs and then failed. There is no need to wait for such a long
time before query fail, and we can make the condition more sensitive.
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