You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@hbase.apache.org by "Liang Xie (JIRA)" <ji...@apache.org> on 2013/07/08 08:07:48 UTC
[jira] [Created] (HBASE-8892) should pick the files as older as
possible also while hasReferences
Liang Xie created HBASE-8892:
--------------------------------
Summary: should pick the files as older as possible also while hasReferences
Key: HBASE-8892
URL: https://issues.apache.org/jira/browse/HBASE-8892
Project: HBase
Issue Type: Bug
Components: Compaction
Affects Versions: 0.94.9
Reporter: Liang Xie
Assignee: Liang Xie
Priority: Minor
Currently, while hasReferences for compactSelection, and if compactSelection.getFilesToCompact() has more than maxFilesToCompact files, we clear the files from beginning, it's different with the normal minor compaction ratio based policy, which tries to do compactSelection from older to newer ones as possible.
{code}
} else if (compactSelection.getFilesToCompact().size() > this.maxFilesToCompact) {
// all files included in this compaction, up to max
int pastMax = compactSelection.getFilesToCompact().size() - this.maxFilesToCompact;
compactSelection.getFilesToCompact().subList(0, pastMax).clear();
{code}
It makes the beginning files more difficult to be picked up in future's minor compaction stage.
IMHO, it should be like this:
{code}
compactSelection.getFilesToCompact()
.subList(this.maxFilesToCompact, compactSelection.getFilesToCompact().size())
.clear();
{code}
It's not a big issue, since occurs while hasReferences returns true only.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira