Danny Chen created HUDI-2751:
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Summary: To avoid the duplicates for streaming read MOR table
Key: HUDI-2751
URL: https://issues.apache.org/jira/browse/HUDI-2751
Project: Apache Hudi
Issue Type: Sub-task
Components: Common Core
Reporter: Danny Chen
Fix For: 0.11.0
Image there are commits on the timeline:
inflight compaction complete
compaction
|
|
-----instant 99 - instant 100 ----- 101 --- 102 ------ instant 100 ----------
first read ->|
second read ->|
-- range 1 ----| ----------------------range 2 -------------------|
instant 99, 101, 102 are successful non-compaction delta commits;
instant 100 is compaction instant,
the first inc read consumes to instant 99 and the second read consumes from
instant 100 to instant 102, the second read would consumes the commit files of
instant 100 which has already been consumed before.
The duplicate reading happens when this condition triggers: a compaction
instant schedules then completes in *one* consume range.
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