[
https://issues.apache.org/jira/browse/PHOENIX-5645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Geoffrey Jacoby updated PHOENIX-5645:
-------------------------------------
Summary: GlobalIndexChecker should prevent compaction from purging very
recently deleted cells (was: GlobalIndexChecker should prevent compaction from
purging very recent deleted cells)
> GlobalIndexChecker should prevent compaction from purging very recently
> deleted cells
> -------------------------------------------------------------------------------------
>
> Key: PHOENIX-5645
> URL: https://issues.apache.org/jira/browse/PHOENIX-5645
> Project: Phoenix
> Issue Type: Improvement
> Reporter: Geoffrey Jacoby
> Assignee: Geoffrey Jacoby
> Priority: Major
>
> IndexTool rebuilds and index scrutiny can both give strange, incorrect
> results if a major compaction occurs in the middle of their run. In the
> rebuild case, it's because we're rewriting "history" on the index at the same
> time that compaction is rewriting "history" by purging deleted and expired
> cells.
> In the case of scrutiny, it's because it does an SCN-based lookback, and if
> versions are purged on the index before their equivalent data table rows, you
> can get false errors.
> Since in the new indexing path we already have a coprocessor on each index,
> it should override the compaction hook to shield rows newer than some
> configurable age from being purged during a major compaction.
> In the future, this should be contributed as a general feature to HBase for
> arbitrary tables.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
