[jira] [Created] (HBASE-11745) FilterAllFilter should return ReturnCode.SKIP

["Andrew Purtell (JIRA)" <ji...@apache.org>]

Andrew Purtell created HBASE-11745:
--------------------------------------

             Summary: FilterAllFilter should return ReturnCode.SKIP
                 Key: HBASE-11745
                 URL: https://issues.apache.org/jira/browse/HBASE-11745
             Project: HBase
          Issue Type: Bug
            Reporter: Andrew Purtell
            Assignee: Andrew Purtell
             Fix For: 0.99.0, 2.0.0, 0.98.6


FilterAllFilter is a filter in hbase-server's test packages used by PerformanceEvaluation to filter all results at the server when given the --filterAll command line argument. There is an unfortunate bug in versions greater than 0.94 (where I rewrote this filter and didn't notice the issue in later versions at the time):
{code}
  @Override
  public ReturnCode filterKeyValue(Cell v) throws IOException {
    return ReturnCode.INCLUDE;
  }
{code}
This is obviously wrong, and results in the creation of KeyValue objects that we will almost immediately throw away when processing filterRow for backwards compatibility, which FilterAllFilter implements as:
{code}
  @Override
  public boolean filterRow() throws IOException {
    return true;
  }
{code}

We noticed this problem when comparing object allocations during RPC processing between 0.94 and 0.98.



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