[jira] [Created] (DRILL-6002) Avoid memory copy from direct buffer to heap while spilling to local disk

[Vlad Rozov (JIRA)]

Vlad Rozov created DRILL-6002:
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             Summary: Avoid memory copy from direct buffer to heap while 
spilling to local disk
                 Key: DRILL-6002
                 URL: https://issues.apache.org/jira/browse/DRILL-6002
             Project: Apache Drill
          Issue Type: Improvement
            Reporter: Vlad Rozov
            Assignee: Vlad Rozov


When spilling to a local disk or to any file system that supports 
WritableByteChannel it is preferable to avoid copy from off-heap to java heap 
as WritableByteChannel can work directly with the off-heap memory.  



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