[jira] [Comment Edited] (HBASE-15480) Bloom Filter check needs to be more efficient for array

["Ted Yu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-15480?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15227139#comment-15227139 ] 

Ted Yu edited comment on HBASE-15480 at 4/6/16 4:08 AM:
--------------------------------------------------------

{code}
   * Check if the specified keys are contained in the bloom filter.
...
+  public BitSet contains(byte[][] key, int[] keyOffset, int[] keyLength, ByteBuff bloom) {
{code}
Since multiple keys are checked in the method, shouldn't the parameter names be in plural ?

BTW I don't find the caller for the new method.
Maybe it is used by proprietary code.


was (Author: yuzhihong@gmail.com):
{code}
   * Check if the specified keys are contained in the bloom filter.
...
+  public BitSet contains(byte[][] key, int[] keyOffset, int[] keyLength, ByteBuff bloom) {
{code}
Since multiple keys are checked in the method, shouldn't the parameter names be in plural ?

BTW I don't find the caller for the new method.
Did I miss something ?

> Bloom Filter check needs to be more efficient for array
> -------------------------------------------------------
>
>                 Key: HBASE-15480
>                 URL: https://issues.apache.org/jira/browse/HBASE-15480
>             Project: HBase
>          Issue Type: Improvement
>          Components: Performance
>    Affects Versions: 1.0.3
>            Reporter: Walter Koetke
>            Assignee: Walter Koetke
>             Fix For: 1.0.4
>
>         Attachments: BloomFilterCheckOneByOne.tiff, HBASE-15480-branch-1.0.patch, HBASE-15480.patch
>
>
> It is currently inefficient to do lots of bloom filter checks. Each check has overhead like going to the block cache to retrieve the block and recording metrics. It would be good to have one bloom filter check api that does a bunch of checks without so much block retrieval and metrics updates.



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