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From "Aihua Xu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-10851) HCatalog NullPointerException when using views in Pig
Date Mon, 01 Jun 2015 19:54:22 GMT

     [ https://issues.apache.org/jira/browse/HIVE-10851?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aihua Xu updated HIVE-10851:
----------------------------
    Attachment: HIVE-10851.patch

> HCatalog NullPointerException when using views in Pig
> -----------------------------------------------------
>
>                 Key: HIVE-10851
>                 URL: https://issues.apache.org/jira/browse/HIVE-10851
>             Project: Hive
>          Issue Type: Bug
>          Components: HCatalog, StorageHandler
>            Reporter: Dustin Cote
>            Assignee: Aihua Xu
>         Attachments: HIVE-10851.patch
>
>
> When trying to access a hive table view with HCatalog through Pig, a NullPointerException
is thrown.  I realize that it is documented here that HCatalog and views do not work for Pig:
> https://cwiki.apache.org/confluence/display/Hive/HCatalog+CLI#HCatalogCLI-Create/Drop/AlterView
> However, surfacing a NullPointerException is not the proper way to handle the incompatibility.
 Stack trace below:
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator
for alias A
>         at org.apache.pig.PigServer.openIterator(PigServer.java:892)
>         at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:774)
>         at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372)
>         at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:198)
>         at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:173)
>         at org.apache.pig.tools.grunt.Grunt.run(Grunt.java:69)
>         at org.apache.pig.Main.run(Main.java:541)
>         at org.apache.pig.Main.main(Main.java:156)
>         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.run(RunJar.java:221)
>         at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
> Caused by: org.apache.pig.PigException: ERROR 1002: Unable to store alias A
>         at org.apache.pig.PigServer.storeEx(PigServer.java:994)
>         at org.apache.pig.PigServer.store(PigServer.java:954)
>         at org.apache.pig.PigServer.openIterator(PigServer.java:867)
>         ... 13 more
> Caused by: org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobCreationException:
ERROR 2017: Internal error creating job configuration.
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:873)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.compile(JobControlCompiler.java:298)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:190)
>         at org.apache.pig.PigServer.launchPlan(PigServer.java:1334)
>         at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:1319)
>         at org.apache.pig.PigServer.storeEx(PigServer.java:990)
>         ... 15 more
> Caused by: java.io.IOException: java.lang.NullPointerException
>         at org.apache.hive.hcatalog.mapreduce.HCatInputFormat.setInput(HCatInputFormat.java:97)
>         at org.apache.hive.hcatalog.mapreduce.HCatInputFormat.setInput(HCatInputFormat.java:61)
>         at org.apache.hive.hcatalog.pig.HCatLoader.setLocation(HCatLoader.java:127)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getJob(JobControlCompiler.java:498)
>         ... 20 more
> Caused by: java.lang.NullPointerException
>         at java.lang.Class.forName0(Native Method)
>         at java.lang.Class.forName(Class.java:190)
>         at org.apache.hive.hcatalog.mapreduce.FosterStorageHandler.<init>(FosterStorageHandler.java:59)
>         at org.apache.hive.hcatalog.common.HCatUtil.getStorageHandler(HCatUtil.java:404)
>         at org.apache.hive.hcatalog.common.HCatUtil.getStorageHandler(HCatUtil.java:367)
>         at org.apache.hive.hcatalog.mapreduce.InitializeInput.extractPartInfo(InitializeInput.java:158)
>         at org.apache.hive.hcatalog.mapreduce.InitializeInput.getInputJobInfo(InitializeInput.java:137)



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