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Date: Fri, 27 Dec 2013 21:26:51 +0000 (UTC)
From: "Nick Dimiduk (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Message-ID: <JIRA.12686560.1388173584812.16678.1388179611285@arcas>
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References: <JIRA.12686560.1388173584812@arcas>
Subject: [jira] [Commented] (HIVE-6117) mapreduce.RecordReader instance
 needs to be initialized
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    [ https://issues.apache.org/jira/browse/HIVE-6117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13857747#comment-13857747 ] 

Nick Dimiduk commented on HIVE-6117:
------------------------------------

Not sure; can I force the SELECT statement to run as a job?

> mapreduce.RecordReader instance needs to be initialized
> -------------------------------------------------------
>
>                 Key: HIVE-6117
>                 URL: https://issues.apache.org/jira/browse/HIVE-6117
>             Project: Hive
>          Issue Type: Bug
>          Components: HBase Handler
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>         Attachments: 6117.00.patch
>
>
> The HBase storage handler makes use of a mapreduce.RecordReader instance but does not initialize it when consumed from local context. This results in a NPE for some queries, for instance
> {noformat}
> create table hbase_1(key string, age int) stored by 'org.apache.hadoop.hive.hbase.HBaseStorageHandler' with serdeproperties ( "hbase.columns.mapping" = "info:age");
> insert overwrite table hbase_1 select name, SUM(age) from studenttab10k group by name;
> select * from hbase_1;
> {noformat}
> The select statement throws the following exception
> {noformat}
> 13/12/18 01:30:32 ERROR CliDriver: Failed with exception java.io.IOException:java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:551)
> at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:489)
> at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:136)
> at org.apache.hadoop.hive.ql.Driver.getResults(Driver.java:1494)
> at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:271)
> at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:216)
> at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:413)
> at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:348)
> at org.apache.hadoop.hive.cli.CliDriver.processReader(CliDriver.java:446)
> at org.apache.hadoop.hive.cli.CliDriver.processFile(CliDriver.java:456)
> at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:737)
> at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)
> at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:614)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:601)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hbase.mapreduce.TableRecordReaderImpl.nextKeyValue(TableRecordReaderImpl.java:196)
> at org.apache.hadoop.hbase.mapreduce.TableRecordReader.nextKeyValue(TableRecordReader.java:138)
> at org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat$1.next(HiveHBaseTableInputFormat.java:234)
> at org.apache.hadoop.hive.hbase.HiveHBaseTableInputFormat$1.next(HiveHBaseTableInputFormat.java:193)
> at org.apache.hadoop.hive.ql.exec.FetchOperator.getNextRow(FetchOperator.java:521)
> {noformat}


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