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Date: Thu, 9 Mar 2017 08:47:38 +0000 (UTC)
From: "Premal Shah (JIRA)" <jira@apache.org>
To: issues@hive.apache.org
Message-ID: <JIRA.13016946.1478020821000.20252.1489049258054@Atlassian.JIRA>
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Subject: [jira] [Resolved] (HIVE-15105) Hive shell runs out of memory on Tez
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archived-at: Thu, 09 Mar 2017 08:47:49 -0000


     [ https://issues.apache.org/jira/browse/HIVE-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Premal Shah resolved HIVE-15105.
--------------------------------
      Resolution: Fixed
    Release Note: Once DEBUG logging was turned off, the memory issue was resolved.

> Hive shell runs out of memory on Tez
> ------------------------------------
>
>                 Key: HIVE-15105
>                 URL: https://issues.apache.org/jira/browse/HIVE-15105
>             Project: Hive
>          Issue Type: Bug
>          Components: Tez
>    Affects Versions: 2.0.1
>            Reporter: Premal Shah
>
> Hive 2.0.1
> Hadoop 2.7.2
> Tex 0.8.4
> We have a UDF in hive which take in some values and outputs a score. When running a query on a table which calls the score function on every row, looks like tez is not running the query on YARN, but trying to run it in local mode. It then runs out of memory trying to insert that data into a table.
> Here's the query
> {noformat}
> ADD JAR score.jar;
> CREATE TEMPORARY FUNCTION score AS 'hive.udf.ScoreUDF';
> CREATE TABLE abc AS
> SELECT
>     id,
>     score(col1, col2) as score
>     , '2016-10-11' AS dt
> FROM input_table
> ;
> {noformat}
> Here's the output of the shell
> {noformat}
> Query ID = hadoop_20161028232841_5a06db96-ffaa-4e75-a657-c7cb46ccb3f5
> Total jobs = 1
> Launching Job 1 out of 1
> java.lang.OutOfMemoryError: Java heap space
>         at java.util.Arrays.copyOf(Arrays.java:3332)
>         at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
>         at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
>         at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:622)
>         at java.lang.StringBuilder.append(StringBuilder.java:202)
>         at com.google.protobuf.TextFormat.escapeBytes(TextFormat.java:1283)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:394)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:286)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:404)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:286)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:404)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:286)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:404)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:283)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:404)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:283)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.printFieldValue(TextFormat.java:404)
>         at com.google.protobuf.TextFormat$Printer.printSingleField(TextFormat.java:327)
>         at com.google.protobuf.TextFormat$Printer.printField(TextFormat.java:286)
>         at com.google.protobuf.TextFormat$Printer.print(TextFormat.java:273)
>         at com.google.protobuf.TextFormat$Printer.access$400(TextFormat.java:248)
>         at com.google.protobuf.TextFormat.shortDebugString(TextFormat.java:88)
> FAILED: Execution Error, return code -101 from org.apache.hadoop.hive.ql.exec.tez.TezTask. Java heap space
> {noformat}
> It looks like the job is not getting submitted to the cluster, but running locally. We can't get tez to run the query on the cluster. 
> The hive shell starts with an Xmx of 4G. 
> If I set hive.execution.engine = mr, then the query works, because it runs on the hadoop cluster. 


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