Tian Jiang created IOTDB-1184:
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Summary: 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
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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