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https://issues.apache.org/jira/browse/HBASE-1083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack resolved HBASE-1083.
--------------------------
Resolution: Fixed
> Will keep scheduling major compactions if last time one ran, we didn't.
> -----------------------------------------------------------------------
>
> Key: HBASE-1083
> URL: https://issues.apache.org/jira/browse/HBASE-1083
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: stack
> Fix For: 0.19.0
>
> Attachments: 1083.patch
>
>
> Excerpt below has major compactions scheduled ever few hours but nothing to
> compact each time through -- last run was a major compaction -- and times are
> off. Need to touch files if nothing to compact so major doesn't get
> scheduled again.
> {code}
> 2008-12-20 02:41:03,933 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 249999 seconds
> 2008-12-20 05:27:43,933 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 259999 seconds
> 2008-12-20 08:14:23,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 269999 seconds
> 2008-12-20 11:01:03,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 279999 seconds
> 2008-12-20 13:47:43,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 289999 seconds
> 2008-12-20 16:34:23,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 299999 seconds
> 2008-12-20 19:21:03,933 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 309999 seconds
> 2008-12-20 22:07:43,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 319999 seconds
> {code}
> Then it says:
> {code}
> 2008-12-20 13:47:43,935 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Skipping major compaction because only one (major) compacted file only and
> elapsedTime 289999825 is < ttl=-1
> {code}
> I think whats happening is that we're not compacting because we just did but
> major compactions keep getting triggered because we are not updating the file
> timestamp. Look into it. At least fix up logging so its clearer whats
> happening.. Here is snippet:
> {code}
> 2008-12-20 11:01:04,026 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Skipping major compaction because only one (major) compacted file only and
> elapsedTime 149999850 is < ttl=-1
> 2008-12-20 11:01:04,026 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> compaction completed on region assigners,,1229364037757 in 0sec
> 2008-12-20 13:47:43,932 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 170018656/content. Time since last major
> compaction: 289999 seconds
> 2008-12-20 13:47:43,932 DEBUG
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction requested
> for region streamitems,^...@^@^...@^@^C�r�,1229427582771 because:
> regionserver/0:0:0:0:0:0:0:0:60020.majorCompactionChecker requests major
> compaction
> 2008-12-20 13:47:43,932 INFO org.apache.hadoop.hbase.regionserver.HRegion:
> starting compaction on region streamitems,^...@^@^...@^@^C�r�,1229427582771
> 2008-12-20 13:47:43,934 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 65151897/content. Time since last major
> compaction: 259999 seconds
> 2008-12-20 13:47:43,934 DEBUG
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction requested
> for region streamitems,^...@^@^...@^@^C3=�,1229459727659 because:
> regionserver/0:0:0:0:0:0:0:0:60020.majorCompactionChecker requests major
> compaction
> 2008-12-20 13:47:43,935 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 1579534353/content. Time since last
> major compaction: 259983 seconds
> 2008-12-20 13:47:43,935 DEBUG
> org.apache.hadoop.hbase.regionserver.CompactSplitThread: Compaction requested
> for region streamitems,^...@^@^...@^@^AV^Ds,1229459695202 because:
> regionserver/0:0:0:0:0:0:0:0:60020.majorCompactionChecker requests major
> compaction
> 2008-12-20 13:47:43,935 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Skipping major compaction because only one (major) compacted file only and
> elapsedTime 289999825 is < ttl=-1
> 2008-12-20 13:47:43,936 DEBUG org.apache.hadoop.hbase.regionserver.HStore:
> Major compaction triggered on store: 1277711984/content. Time since last
> major compaction: 339999 seconds
> ...
> {code}
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