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Posted to dev@phoenix.apache.org by "Yuhao Bi (JIRA)" <ji...@apache.org> on 2015/07/13 03:31:05 UTC
[jira] [Commented] (PHOENIX-2094) Query hint ignored for functional
index
[ https://issues.apache.org/jira/browse/PHOENIX-2094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14624104#comment-14624104 ]
Yuhao Bi commented on PHOENIX-2094:
-----------------------------------
May be you can use ILIKE instead temporarily.
SELECT /*+ INDEX(LOG LOG_REQUEST_IDX) */ * FROM LOG WHERE RQ ILIKE '/jquery%';
> Query hint ignored for functional index
> ---------------------------------------
>
> Key: PHOENIX-2094
> URL: https://issues.apache.org/jira/browse/PHOENIX-2094
> Project: Phoenix
> Issue Type: Bug
> Reporter: Bryan Gerber
>
> Hints are not being used for functional index.
>
> EXPLAIN SELECT /*+ INDEX(LOG LOG_LOWER_REQUEST_IDX) */ * FROM LOG WHERE LOWER(RQ) LIKE '/jquery%';
> +------------------------------------------+
> | CLIENT 40-CHUNK PARALLEL 40-WAY FULL SCAN OVER LOG |
> | SERVER FILTER BY LOWER(RQ) LIKE '/jquery%' |
> +------------------------------------------+
>
> Test table has 2.9 million records; production table is many orders of magnitude larger.
> Here’s a simplified schema for the test table:
> CREATE TABLE IF NOT EXISTS LOG
> (
> TS VARCHAR NOT NULL,
> f VARCHAR NOT NULL,
> r INTEGER NOT NULL,
> sa VARCHAR,
> da VARCHAR,
> rq VARCHAR
> CONSTRAINT pkey PRIMARY KEY (TS, f, r)
> ) TTL='5616000',KEEP_DELETED_CELLS='false',IMMUTABLE_ROWS=true,COMPRESSION='SNAPPY',SALT_BUCKETS=40,MAX_FILESIZE='10000000000',SPLIT_POLICY='org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy';
>
> CREATE INDEX IF NOT EXISTS LOG_LOWER_REQUEST_IDX ON LOG(LOWER(rq)) TTL='5616000',KEEP_DELETED_CELLS='false',COMPRESSION='SNAPPY',MAX_FILESIZE='10000000000',SPLIT_POLICY='org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy';
> CREATE INDEX IF NOT EXISTS LOG_REQUEST_IDX ON LOG(rq) TTL='5616000',KEEP_DELETED_CELLS='false',COMPRESSION='SNAPPY',MAX_FILESIZE='10000000000',SPLIT_POLICY='org.apache.hadoop.hbase.regionserver.ConstantSizeRegionSplitPolicy';
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