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https://issues.apache.org/jira/browse/IOTDB-1184?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17297908#comment-17297908
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Chao Wang commented on IOTDB-1184:
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+ 1
> A separate file-purging thread
> ------------------------------
>
> Key: IOTDB-1184
> URL: https://issues.apache.org/jira/browse/IOTDB-1184
> Project: Apache IoTDB
> Issue Type: Improvement
> Components: Core/Engine
> Reporter: Tian Jiang
> Priority: Major
>
> Currently, we use a synchronized file purging strategy, which means the
> thread that wants to remove a TsFile will try write-locking the file before
> removing it. If the file is being queried, the thread may have to wait for a
> relatively long time until the corresponding queries are finished and the
> file is read-unlocked.
> So I propose a separate purging thread, any other threads that want to delete
> a TsFile may register the file in that thread, and the purging thread will
> periodically check the registered files, if they can be locked, the thread
> will write lock and remove them physically.
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