[jira] [Created] (HDFS-7321) Add a mechanism to clean up the free queue in ByteArrayManager

["Tsz Wo Nicholas Sze (JIRA)" <ji...@apache.org>]

Tsz Wo Nicholas Sze created HDFS-7321:
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             Summary: Add a mechanism to clean up the free queue in ByteArrayManager
                 Key: HDFS-7321
                 URL: https://issues.apache.org/jira/browse/HDFS-7321
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Tsz Wo Nicholas Sze
            Assignee: Tsz Wo Nicholas Sze
            Priority: Minor


ByteArrayManager is designed to limit the number of byte arrays allocated.  It also provide a mechanism for recycling arrays.  It uses a free queue to store the recycled arrays internally.  When the free queue size is large and there is no array allocation for a certain time period, it should gradually release the arrays for reducing the memory usage.



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