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Posted to hdfs-dev@hadoop.apache.org by "Arpit Agarwal (JIRA)" <ji...@apache.org> on 2014/08/23 09:23:12 UTC

[jira] [Created] (HDFS-6918) Investigate eviction from RAM disk via file truncation

Arpit Agarwal created HDFS-6918:
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             Summary: Investigate eviction from RAM disk via file truncation
                 Key: HDFS-6918
                 URL: https://issues.apache.org/jira/browse/HDFS-6918
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Arpit Agarwal
            Assignee: Arpit Agarwal


We proposed evicting blocks from RAM disk by just deleting the file. Assuming the client completes its read quickly the block will be deleted when the client closes its handle.

[~cmccabe] suggested making eviction more reliable by truncating the file length to 0. This task is to investigate the same.



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