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https://issues.apache.org/jira/browse/HBASE-14575?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jerry He updated HBASE-14575:
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Description:
Per [~devaraj]'s idea on parent issue, let's see if we can reduce the scope of
critical section under which compactions hold the region read lock.
Here is summary from parent issue:
Another idea is we can reduce the scope of when the read lock is held during
compaction. In theory the compactor only needs a region read lock while
deciding what files to compact and at the time of committing the compaction.
We're protected from the case of region close events because compactions are
checking (every 10k bytes written) if the store has been closed in order to
abort in such a case.
Note: Fixed in subtask HBASE-14575
was:
Per [~devaraj]'s idea on parent issue, let's see if we can reduce the scope of
critical section under which compactions hold the region read lock.
Here is summary from parent issue:
Another idea is we can reduce the scope of when the read lock is held during
compaction. In theory the compactor only needs a region read lock while
deciding what files to compact and at the time of committing the compaction.
We're protected from the case of region close events because compactions are
checking (every 10k bytes written) if the store has been closed in order to
abort in such a case.
> Relax region read lock for compactions
> --------------------------------------
>
> Key: HBASE-14575
> URL: https://issues.apache.org/jira/browse/HBASE-14575
> Project: HBase
> Issue Type: Sub-task
> Components: Compaction, regionserver
> Reporter: Nick Dimiduk
> Assignee: Nick Dimiduk
> Fix For: 2.0.0, 1.3.0
>
> Attachments: 14575-test-case.patch, 14575-v1.patch, 14575-v2.patch,
> 14575-v3.patch, 14575-v4.patch, 14575-v5.patch, 14575-v6.txt, 14575-v6.txt,
> 14575-v6.txt, 14575-v7.txt, 14575.v00.patch
>
>
> Per [~devaraj]'s idea on parent issue, let's see if we can reduce the scope
> of critical section under which compactions hold the region read lock.
> Here is summary from parent issue:
> Another idea is we can reduce the scope of when the read lock is held during
> compaction. In theory the compactor only needs a region read lock while
> deciding what files to compact and at the time of committing the compaction.
> We're protected from the case of region close events because compactions are
> checking (every 10k bytes written) if the store has been closed in order to
> abort in such a case.
> Note: Fixed in subtask HBASE-14575
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