hive-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Demeter Sztanko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10437) NullPointerException on queries where map/reduce is not involved on tables with partitions
Date Wed, 22 Apr 2015 14:20:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10437?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14507149#comment-14507149
] 

Demeter Sztanko commented on HIVE-10437:
----------------------------------------

First raised as a bug in rcongiu's Json SERDE: https://github.com/rcongiu/Hive-JSON-Serde/issues/106

> NullPointerException on queries where map/reduce is not involved on tables with partitions
> ------------------------------------------------------------------------------------------
>
>                 Key: HIVE-10437
>                 URL: https://issues.apache.org/jira/browse/HIVE-10437
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Demeter Sztanko
>            Priority: Minor
>   Original Estimate: 0.5h
>  Remaining Estimate: 0.5h
>
> On a table with partitions, whenever I try to do a simple query which tells hive not
to execute mapreduce but just read data straight from hdfs, it raises an exception:
> {code}
> create external table jsonbug(
> a int,
> b string
> )
>     PARTITIONED BY (
>     `c` string)
> ROW FORMAT SERDE
>   'org.openx.data.jsonserde.JsonSerDe'
> WITH SERDEPROPERTIES (
>       'ignore.malformed.json'='true')
> STORED AS INPUTFORMAT
>   'org.apache.hadoop.mapred.TextInputFormat'
> OUTPUTFORMAT
>   'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat'
> LOCATION
>   '/tmp/jsonbug';
> ALTER TABLE jsonbug ADD PARTITION(c='1');
> {code}
> Runnin simple 
> {code}
> select * from jsonbug;
> {code}
> Raises the following exception:
> {code}
> FAILED: RuntimeException org.apache.hadoop.hive.ql.metadata.HiveException: Failed with
exception nulljava.lang.NullPointerException
>     at org.apache.hadoop.hive.ql.exec.FetchOperator.needConversion(FetchOperator.java:607)
>     at org.apache.hadoop.hive.ql.exec.FetchOperator.setupOutputObjectInspector(FetchOperator.java:578)
>     at org.apache.hadoop.hive.ql.exec.FetchOperator.initialize(FetchOperator.java:172)
>     at org.apache.hadoop.hive.ql.exec.FetchOperator.<init>(FetchOperator.java:140)
>     at org.apache.hadoop.hive.ql.exec.FetchTask.initialize(FetchTask.java:79)
>     at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:455)
>     at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:307)
>     at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1112)
>     at org.apache.hadoop.hive.ql.Driver.runInternal(Driver.java:1160)
>     at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1049)
>     at org.apache.hadoop.hive.ql.Driver.run(Driver.java:1039)
>     at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:207)
>     at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:159)
>     at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:370)
>     at org.apache.hadoop.hive.cli.CliDriver.executeDriver(CliDriver.java:754)
>     at org.apache.hadoop.hive.cli.CliDriver.run(CliDriver.java:675)
>     at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:615)
>     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:606)
>     at org.apache.hadoop.util.RunJar.main(RunJar.java:160)
> {code}
> It works fine if I execute a query involving map/reduce job though.
> This problem occurs only when using SerDe's created for hive versions pre 1.1.0, those
which do not have @SerDeSpec annotation specified. Most of the third party SerDE's, including
hcat's JsonSerde have this problem as well. 
> It seems like changes made in HIVE-7977 introduce this bug. See org.apache.hadoop.hive.ql.exec.FetchOperator.needConversion(FetchOperator.java:607)
> {code}
> Class<?> tableSerDe = tableDesc.getDeserializerClass();
> String[] schemaProps = AnnotationUtils.getAnnotation(tableSerDe, SerDeSpec.class).schemaProps();
> {code}
> And it also seems like a relatively easy fix.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message