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https://issues.apache.org/jira/browse/HBASE-2794?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13116689#comment-13116689
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Ted Yu commented on HBASE-2794:
-------------------------------
I got the following errors from test suite:
{code}
Failed tests:
testWorkerAbort(org.apache.hadoop.hbase.master.TestDistributedLogSplitting):
expected:<1> but was:<0>
Tests in error:
testMergeTool(org.apache.hadoop.hbase.util.TestMergeTool): String index out
of range: -1
testBasicRollingRestart(org.apache.hadoop.hbase.master.TestRollingRestart):
test timed out after 300000 milliseconds
{code}
They passed individually.
> ROWCOL bloom filter not used if multiple columns within same family are
> requested in a Get
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-2794
> URL: https://issues.apache.org/jira/browse/HBASE-2794
> Project: HBase
> Issue Type: Improvement
> Components: performance
> Reporter: Kannan Muthukkaruppan
> Fix For: 0.92.0
>
>
> Noticed the following snippet in StoreFile.java:Scanner:shouldSeek():
> {code}
> switch(bloomFilterType) {
> case ROW:
> key = row;
> break;
> case ROWCOL:
> if (columns.size() == 1) {
> byte[] col = columns.first();
> key = Bytes.add(row, col);
> break;
> }
> //$FALL-THROUGH$
> default:
> return true;
> }
> {code}
> If columns.size > 1, then we currently don't take advantage of the bloom
> filter. We should optimize this to check bloom for each of columns and if
> none of the columns are present in the bloom avoid opening the file.
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