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https://issues.apache.org/jira/browse/HBASE-20724?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16776500#comment-16776500
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Duo Zhang commented on HBASE-20724:
-----------------------------------
{quote}
will the compacted file names remain in the meta info of the hfile forever?
{quote}
HFile is immutable so once it is generated, the meta info keep there forever.
And the problem here is that, sometimes we may need to inherit the compacted
files from the compacted hfiles, we should try our best to not include too many
compacted file names in the meta info...
> Sometimes some compacted storefiles are still opened after region failover
> --------------------------------------------------------------------------
>
> Key: HBASE-20724
> URL: https://issues.apache.org/jira/browse/HBASE-20724
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0, 1.3.0, 1.4.0, 1.5.0, 2.0.0
> Reporter: Francis Liu
> Assignee: Guanghao Zhang
> Priority: Critical
> Attachments: HBASE-20724.master.001.patch,
> HBASE-20724.master.002.patch, HBASE-20724.master.003.patch,
> HBASE-20724.master.004.patch, HBASE-20724.master.005.patch,
> HBASE-20724.master.006.patch, HBASE-20724.master.007.patch,
> HBASE-20724.master.008.patch, HBASE-20724.master.009.patch
>
>
> It is important that compacted storefiles of a given compaction execution are
> wholly opened or archived to insure data consistency. ie a storefile
> containing delete tombstones can be archived while older storefiles
> containing cells that were supposed to be deleted are left unarchived thereby
> undeleting those cells.
> When a server fails compaction markers (in the wal edit) are used to
> determine which storefiles are compacted and should be excluded during region
> open (during failover). But the WALs containing compaction markers can be
> prematurely archived even though there are still compacted storefiles for
> that particular compaction event that hasn't been archived yet. Thus losing
> compaction information that needs to be replayed in the event of an RS crash.
> This is because hlog archiving logic only keeps track of flushed storefiles
> and not compacted ones.
> https://issues.apache.org/jira/browse/HBASE-20704?focusedCommentId=16507680&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16507680
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