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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-17012) Handle Offheap cells in CompressedKvEncoder
Date Thu, 03 Nov 2016 14:14:58 GMT
Anoop Sam John created HBASE-17012:
--------------------------------------

             Summary: Handle Offheap cells in CompressedKvEncoder
                 Key: HBASE-17012
                 URL: https://issues.apache.org/jira/browse/HBASE-17012
             Project: HBase
          Issue Type: Sub-task
    Affects Versions: 2.0.0
            Reporter: Anoop Sam John
             Fix For: 2.0.0


When we deal with off heap cells we will end up copying Cell components on heap
{code}
public void write(Cell cell) throws IOException {
.................
      write(cell.getRowArray(), cell.getRowOffset(), cell.getRowLength(), compression.rowDict);
      write(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength(),
          compression.familyDict);
      write(cell.getQualifierArray(), cell.getQualifierOffset(), cell.getQualifierLength(),
          compression.qualifierDict);
......
      out.write(cell.getValueArray(), cell.getValueOffset(), cell.getValueLength());
...
{code}
We need to avoid this.



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