[jira] [Created] (HIVE-16735) Please add that hive.mapred.local.mem must be set in MBs in the documentation

["Laurel Hale (JIRA)" <ji...@apache.org>]

Laurel Hale created HIVE-16735:
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             Summary: Please add that hive.mapred.local.mem must be set in MBs in the documentation
                 Key: HIVE-16735
                 URL: https://issues.apache.org/jira/browse/HIVE-16735
             Project: Hive
          Issue Type: Task
          Components: Documentation
            Reporter: Laurel Hale
            Assignee: Lefty Leverenz
            Priority: Minor


Hi Lefty,
One of my developers noticed this and we do not document the local mode. Thought I'd let you know.

Here's a good place where you could put this:

https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties#ConfigurationProperties-QueryandDDLExecution

There's already a small subsection where hive.mapred.local.mem is documented, but there isn't any information about how to set the value. My developer discovered that when you set it in bytes, it throws the following error:
2017-03-12 09:24:31,835 ERROR [HiveServer2-Background-Pool: Thread-22163()]: mr.MapredLocalTask (MapredLocalTask.java:executeInChildVM(341)) - Exception: java.lang.NumberFormatException: For input string: "4294967296"
java.lang.NumberFormatException: For input string: "4294967296"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Integer.parseInt(Integer.java:495)
at java.lang.Integer.parseInt(Integer.java:527)
at org.apache.hadoop.conf.Configuration.getInt(Configuration.java:1259)
at org.apache.hadoop.hive.conf.HiveConf.getIntVar(HiveConf.java:2415)
at org.apache.hadoop.hive.conf.HiveConf.getIntVar(HiveConf.java:2424)
at org.apache.hadoop.hive.ql.exec.mr.MapredLocalTask.executeInChildVM(MapredLocalTask.java:228)

Instead, this value should be set in MBs for success.

Thanks,
Laurel



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