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https://issues.apache.org/jira/browse/HIVE-15880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15877528#comment-15877528
]
Hive QA commented on HIVE-15880:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12853833/HIVE-15880.01.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:red}ERROR:{color} -1 due to 5 failed/errored test(s), 10252 tests
executed
*Failed tests:*
{noformat}
TestDerbyConnector - did not produce a TEST-*.xml file (likely timed out)
(batchId=235)
org.apache.hadoop.hive.cli.TestEncryptedHDFSCliDriver.testCliDriver[encryption_join_with_different_encryption_keys]
(batchId=159)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14]
(batchId=223)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query23]
(batchId=223)
org.apache.hive.beeline.TestBeeLineWithArgs.testQueryProgress (batchId=211)
{noformat}
Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/3683/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/3683/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-3683/
Messages:
{noformat}
Executing org.apache.hive.ptest.execution.TestCheckPhase
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: 5 tests failed
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12853833 - PreCommit-HIVE-Build
> Allow insert overwrite query to use auto.purge table property
> -------------------------------------------------------------
>
> Key: HIVE-15880
> URL: https://issues.apache.org/jira/browse/HIVE-15880
> Project: Hive
> Issue Type: Improvement
> Reporter: Vihang Karajgaonkar
> Assignee: Vihang Karajgaonkar
> Attachments: HIVE-15880.01.patch
>
>
> It seems inconsistent that auto.purge property is not considered when we do a
> INSERT OVERWRITE while it is when we do a DROP TABLE
> Drop table doesn't move table data to Trash when auto.purge is set to true
> {noformat}
> > create table temp(col1 string, col2 string);
> No rows affected (0.064 seconds)
> > alter table temp set tblproperties('auto.purge'='true');
> No rows affected (0.083 seconds)
> > insert into temp values ('test', 'test'), ('test2', 'test2');
> No rows affected (25.473 seconds)
> # hdfs dfs -ls /user/hive/warehouse/temp
> Found 1 items
> -rwxrwxrwt 3 hive hive 22 2017-02-09 13:03
> /user/hive/warehouse/temp/000000_0
> #
> > drop table temp;
> No rows affected (0.242 seconds)
> # hdfs dfs -ls /user/hive/warehouse/temp
> ls: `/user/hive/warehouse/temp': No such file or directory
> #
> # sudo -u hive hdfs dfs -ls /user/hive/.Trash/Current/user/hive/warehouse
> #
> {noformat}
> INSERT OVERWRITE query moves the table data to Trash even when auto.purge is
> set to true
> {noformat}
> > create table temp(col1 string, col2 string);
> > alter table temp set tblproperties('auto.purge'='true');
> > insert into temp values ('test', 'test'), ('test2', 'test2');
> # hdfs dfs -ls /user/hive/warehouse/temp
> Found 1 items
> -rwxrwxrwt 3 hive hive 22 2017-02-09 13:07
> /user/hive/warehouse/temp/000000_0
> #
> > insert overwrite table temp select * from dummy;
> # hdfs dfs -ls /user/hive/warehouse/temp
> Found 1 items
> -rwxrwxrwt 3 hive hive 26 2017-02-09 13:08
> /user/hive/warehouse/temp/000000_0
> # sudo -u hive hdfs dfs -ls /user/hive/.Trash/Current/user/hive/warehouse
> Found 1 items
> drwx------ - hive hive 0 2017-02-09 13:08
> /user/hive/.Trash/Current/user/hive/warehouse/temp
> #
> {noformat}
> While move operations are not very costly on HDFS it could be significant
> overhead on slow FileSystems like S3. This could improve the performance of
> {{INSERT OVERWRITE TABLE}} queries especially when there are large number of
> partitions on tables located on S3 should the user wish to set auto.purge
> property to true
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