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  1. Cassandra
  2. CASSANDRA-6283

Windows 7 data files kept open / can't be deleted after compaction.

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    Details

    • Severity:
      Normal
    • Since Version:

      Description

      Files cannot be deleted, patch CASSANDRA-5383 (Win7 deleting problem) doesn't help on Win-7 on Cassandra 2.0.2. Even 2.1 Snapshot is not running. The cause is: Opened file handles seem to be lost and not closed properly. Win 7 blames, that another process is still using the file (but its obviously cassandra). Only restart of the server makes the files deleted. But after heavy using (changes) of tables, there are about 24K files in the data folder (instead of 35 after every restart) and Cassandra crashes. I experiminted and I found out, that a finalizer fixes the problem. So after GC the files will be deleted (not optimal, but working fine). It runs now 2 days continously without problem. Possible fix/test:
      I wrote the following finalizer at the end of class org.apache.cassandra.io.util.RandomAccessReader:

      RandomAccessReader.java
      @Override
      protected void finalize() throws Throwable {
      	deallocate();
      	super.finalize();
      }
      

      Can somebody test / develop / patch it? Thx.

        Attachments

        1. 6283_StreamWriter_patch.txt
          0.5 kB
          Joshua McKenzie
        2. leakdetect.patch
          2 kB
          graham sanderson
        3. neighbor-log.zip
          338 kB
          Andreas Schnitzerling
        4. root-log.zip
          1.17 MB
          Andreas Schnitzerling
        5. screenshot-1.jpg
          400 kB
          Andreas Schnitzerling
        6. system.log
          3 kB
          Andreas Schnitzerling

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              • Assignee:
                JoshuaMcKenzie Joshua McKenzie
                Reporter:
                Andie78 Andreas Schnitzerling
                Authors:
                Joshua McKenzie
                Reviewers:
                Jonathan Ellis
              • Votes:
                3 Vote for this issue
                Watchers:
                13 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: