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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-860) Persistent distributed cache
Date Sun, 23 Feb 2014 11:30:19 GMT

    [ https://issues.apache.org/jira/browse/HIVE-860?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13909752#comment-13909752
] 

Hive QA commented on HIVE-860:
------------------------------



{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/12630167/HIVE-860.patch

{color:red}ERROR:{color} -1 due to 3 failed/errored test(s), 5175 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_schemeAuthority
org.apache.hadoop.hive.cli.TestMinimrCliDriver.testCliDriver_schemeAuthority2
org.apache.hive.service.cli.TestEmbeddedThriftBinaryCLIService.testExecuteStatementAsync
{noformat}

Test results: http://bigtop01.cloudera.org:8080/job/PreCommit-HIVE-Build/1450/testReport
Console output: http://bigtop01.cloudera.org:8080/job/PreCommit-HIVE-Build/1450/console

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: 3 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12630167

> Persistent distributed cache
> ----------------------------
>
>                 Key: HIVE-860
>                 URL: https://issues.apache.org/jira/browse/HIVE-860
>             Project: Hive
>          Issue Type: Improvement
>    Affects Versions: 0.12.0
>            Reporter: Zheng Shao
>            Assignee: Brock Noland
>             Fix For: 0.13.0
>
>         Attachments: HIVE-860.patch, HIVE-860.patch, HIVE-860.patch, HIVE-860.patch,
HIVE-860.patch, HIVE-860.patch, HIVE-860.patch, HIVE-860.patch
>
>
> DistributedCache is shared across multiple jobs, if the hdfs file name is the same.
> We need to make sure Hive put the same file into the same location every time and do
not overwrite if the file content is the same.
> We can achieve 2 different results:
> A1. Files added with the same name, timestamp, and md5 in the same session will have
a single copy in distributed cache.
> A2. Filed added with the same name, timestamp, and md5 will have a single copy in distributed
cache.
> A2 has a bigger benefit in sharing but may raise a question on when Hive should clean
it up in hdfs.



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