Csaba Ringhofer created IMPALA-9045:
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Summary: Filter base directories of open/aborted compactions
Key: IMPALA-9045
URL: https://issues.apache.org/jira/browse/IMPALA-9045
Project: IMPALA
Issue Type: Bug
Components: Frontend
Affects Versions: Impala 3.3.0
Reporter: Csaba Ringhofer
Major compactions creates directories in base_writeid_visibilityTxnId, which
expresses that it contains all deltas +bases <= writeId, and that the
compaction's transaction is visibilityTxnId. visibilityTxnId is needed to check
whether the compaction is open/aborted/committed, and base directories
belonging to open/aborted compactions should be ignored.
Currently Impala only checks the writeId, so if there is an open/aborted
compaction, it will be used as base, and base/delta directories with smaller
writeIds will be ignored, leading to potential data loss.
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