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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-7159) For inner joins push a 'is not null predicate' to the join sources for every non nullSafe join condition
Date Mon, 16 Jun 2014 07:05:01 GMT

    [ https://issues.apache.org/jira/browse/HIVE-7159?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14032166#comment-14032166
] 

Hive QA commented on HIVE-7159:
-------------------------------



{color:red}Overall{color}: -1 at least one tests failed

Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12650480/HIVE-7159.5.patch

{color:red}ERROR:{color} -1 due to 38 failed/errored test(s), 5611 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_allcolref_in_udf
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_annotate_stats_join
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_auto_sortmerge_join_12
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_bucketmapjoin_negative3
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cross_product_check_1
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_cross_product_check_2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_alt_syntax
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_cond_pushdown_2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_cond_pushdown_4
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_cond_pushdown_unqual2
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_cond_pushdown_unqual4
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_map_ppr
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_join_reorder
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_parquet_columnar
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ptf
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_ptf_streaming
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_skewjoin
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_skewjoinopt18
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_smb_mapjoin_13
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver_windowing
org.apache.hadoop.hive.cli.TestHBaseCliDriver.testCliDriver_hbase_queries
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_bucket_map_join_tez1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_bucket_map_join_tez2
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_cross_product_check_1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_cross_product_check_2
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_filter_join_breaktask
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_join1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_limit_pushdown
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_mapjoin_decimal
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_mapjoin_mapjoin
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_mrr
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_scriptfile1
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_subquery_in
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver_tez_union
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_infer_bucket_sort_map_operators
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_root_dir_external_table
org.apache.hadoop.hive.cli.TestNegativeCliDriver.testNegativeCliDriver_authorization_ctas
org.apache.hadoop.hive.ql.parse.TestParse.testParse_join2
{noformat}

Test results: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/480/testReport
Console output: http://ec2-174-129-184-35.compute-1.amazonaws.com/jenkins/job/PreCommit-HIVE-Build/480/console
Test logs: http://ec2-174-129-184-35.compute-1.amazonaws.com/logs/PreCommit-HIVE-Build-480/

Messages:
{noformat}
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 38 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12650480

> For inner joins push a 'is not null predicate' to the join sources for every non nullSafe
join condition
> --------------------------------------------------------------------------------------------------------
>
>                 Key: HIVE-7159
>                 URL: https://issues.apache.org/jira/browse/HIVE-7159
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Harish Butani
>            Assignee: Harish Butani
>         Attachments: HIVE-7159.1.patch, HIVE-7159.2.patch, HIVE-7159.3.patch, HIVE-7159.4.patch,
HIVE-7159.5.patch
>
>
> A join B on A.x = B.y
> can be transformed to
> (A where x is not null) join (B where y is not null) on A.x = B.y
> Apart from avoiding shuffling null keyed rows it also avoids issues with reduce-side
skew when there are a lot of null values in the data.
> Thanks to [~gopalv] for the analysis and coming up with the solution.



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