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https://issues.apache.org/jira/browse/HBASE-2751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12880318#action_12880318
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Jonathan Gray commented on HBASE-2751:
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Oh one note. We're encapsulating filesystem interaction a bit more cleanly in
the master over in HBASE-2695. Could do something similar for RS that might
make this easier to implement, especially if we went LRU direction.
> Consider closing StoreFiles sometimes
> -------------------------------------
>
> Key: HBASE-2751
> URL: https://issues.apache.org/jira/browse/HBASE-2751
> Project: HBase
> Issue Type: Improvement
> Reporter: Jean-Daniel Cryans
> Priority: Minor
> Fix For: 0.21.0
>
>
> Having a lot of regions per region server could be considered harmless if
> most of them aren't used, but that's not really true at the moment. We keep
> all files opened all the time (except for rolled HLogs). I'm thinking of 2
> solutions
> # Lazy open the store files, or at least close them down after we read the
> file info. Or we could do this for every file except the most recent one.
> # Close files when they're not in use. We need some heuristic to determine
> when is the best moment to declare that a file can be closed.
> Both solutions go hand in hand, and I think it would be a huge gain in order
> to lower the ulimit and xceivers-related issues.
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