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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-16758) Better Select Number of Replications
Date Mon, 05 Jun 2017 17:37:04 GMT

    [ https://issues.apache.org/jira/browse/HIVE-16758?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16037254#comment-16037254
] 

Hive QA commented on HIVE-16758:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12871255/HIVE-16758.1.patch

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 6 failed/errored test(s), 10820 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestBeeLineDriver.testCliDriver[insert_overwrite_local_directory_1]
(batchId=237)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_sortmerge_join_2] (batchId=46)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[orc_ppd_basic] (batchId=140)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=145)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query14] (batchId=232)
org.apache.hadoop.hive.cli.TestPerfCliDriver.testCliDriver[query78] (batchId=232)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/5532/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/5532/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-5532/

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: 6 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12871255 - PreCommit-HIVE-Build

> Better Select Number of Replications
> ------------------------------------
>
>                 Key: HIVE-16758
>                 URL: https://issues.apache.org/jira/browse/HIVE-16758
>             Project: Hive
>          Issue Type: Improvement
>            Reporter: BELUGA BEHR
>            Priority: Minor
>         Attachments: HIVE-16758.1.patch
>
>
> {{org.apache.hadoop.hive.ql.exec.SparkHashTableSinkOperator.java}}
> We should be smarter about how we pick a replication number.  We should add a new configuration
equivalent to {{mapreduce.client.submit.file.replication}}.  This value should be around the
square root of the number of nodes and not hard-coded in the code.
> {code}
> public static final String DFS_REPLICATION_MAX = "dfs.replication.max";
> private int minReplication = 10;
>   @Override
>   protected void initializeOp(Configuration hconf) throws HiveException {
> ...
>     int dfsMaxReplication = hconf.getInt(DFS_REPLICATION_MAX, minReplication);
>     // minReplication value should not cross the value of dfs.replication.max
>     minReplication = Math.min(minReplication, dfsMaxReplication);
>   }
> {code}
> https://hadoop.apache.org/docs/r2.7.2/hadoop-mapreduce-client/hadoop-mapreduce-client-core/mapred-default.xml



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