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https://issues.apache.org/jira/browse/HIVE-12999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15137454#comment-15137454
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Sergey Shelukhin commented on HIVE-12999:
-----------------------------------------
Test failures look unrelated.
> Tez: Vertex creation is slowed down when NN throttles IPCs
> ----------------------------------------------------------
>
> Key: HIVE-12999
> URL: https://issues.apache.org/jira/browse/HIVE-12999
> Project: Hive
> Issue Type: Bug
> Components: Tez
> Affects Versions: 1.2.0, 1.3.0, 2.0.0, 2.1.0
> Reporter: Gopal V
> Assignee: Gopal V
> Attachments: HIVE-12999.1.patch
>
>
> Tez vertex building has a decidedly slow path in the code, which is not
> related to the DAG plan at all.
> The total number of RPC calls is not related to the total number of
> operators, due to a bug in the DagUtils inner loops.
> {code}
> at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1877)
> at
> org.apache.hadoop.hive.ql.exec.Utilities.createTmpDirs(Utilities.java:3207)
> at
> org.apache.hadoop.hive.ql.exec.Utilities.createTmpDirs(Utilities.java:3170)
> at
> org.apache.hadoop.hive.ql.exec.tez.DagUtils.createVertex(DagUtils.java:548)
> at
> org.apache.hadoop.hive.ql.exec.tez.DagUtils.createVertex(DagUtils.java:1151)
> at org.apache.hadoop.hive.ql.exec.tez.TezTask.build(TezTask.java:388)
> at org.apache.hadoop.hive.ql.exec.tez.TezTask.execute(TezTask.java:175)
> {code}
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