pig-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jarek Jarcec Cecho (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (PIG-3830) HiveColumnarLoader throwing FileNotFoundException on Hadoop 2
Date Thu, 27 Mar 2014 17:49:20 GMT

     [ https://issues.apache.org/jira/browse/PIG-3830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jarek Jarcec Cecho updated PIG-3830:
------------------------------------

    Status: Patch Available  (was: Open)

I've forgot to switch the status to "Patch available". Thank you for catching it, [~cheolsoo]!

> HiveColumnarLoader throwing FileNotFoundException on Hadoop 2
> -------------------------------------------------------------
>
>                 Key: PIG-3830
>                 URL: https://issues.apache.org/jira/browse/PIG-3830
>             Project: Pig
>          Issue Type: Bug
>    Affects Versions: 0.12.0
>            Reporter: Jarek Jarcec Cecho
>            Assignee: Jarek Jarcec Cecho
>             Fix For: 0.13.0
>
>         Attachments: PIG-3830.patch
>
>
> I've noticed that {{HiveColumnarLoader}} will thrown {{java.io.FileNotFoundException}}
when used with glob path on Hadoop 2.0. It will run just fine on Hadoop 1.0:
> {code}
> Failed to parse: java.io.FileNotFoundException: File /home/jarcec/cloudera/repos/pig/contrib/piggybank/java/simpleDataDir1395623312698/*.txt
does not exist
> 	at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:198)
> 	at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1676)
> 	at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1623)
> 	at org.apache.pig.PigServer.registerQuery(PigServer.java:575)
> 	at org.apache.pig.PigServer.registerQuery(PigServer.java:588)
> 	at org.apache.pig.piggybank.test.storage.TestHiveColumnarLoader.testHdfdsGlobbing(TestHiveColumnarLoader.java:220)
> 	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 junit.framework.TestCase.runTest(TestCase.java:176)
> 	at junit.framework.TestCase.runBare(TestCase.java:141)
> 	at junit.framework.TestResult$1.protect(TestResult.java:122)
> 	at junit.framework.TestResult.runProtected(TestResult.java:142)
> 	at junit.framework.TestResult.run(TestResult.java:125)
> 	at junit.framework.TestCase.run(TestCase.java:129)
> 	at junit.framework.TestSuite.runTest(TestSuite.java:255)
> 	at junit.framework.TestSuite.run(TestSuite.java:250)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.run(JUnitTestRunner.java:518)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.launch(JUnitTestRunner.java:1052)
> 	at org.apache.tools.ant.taskdefs.optional.junit.JUnitTestRunner.main(JUnitTestRunner.java:906)
> Caused by: java.lang.RuntimeException: java.io.FileNotFoundException: File /home/jarcec/cloudera/repos/pig/contrib/piggybank/java/simpleDataDir1395623312698/*.txt
does not exist
> 	at org.apache.hadoop.fs.RawLocalFileSystem.listStatus(RawLocalFileSystem.java:362)
> 	at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1484)
> 	at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1524)
> 	at org.apache.hadoop.fs.ChecksumFileSystem.listStatus(ChecksumFileSystem.java:564)
> 	at org.apache.pig.piggybank.storage.partition.PathPartitioner.getPartitionKeys(PathPartitioner.java:105)
> 	at org.apache.pig.piggybank.storage.partition.PathPartitionHelper.getPartitionKeys(PathPartitionHelper.java:101)
> 	at org.apache.pig.piggybank.storage.HiveColumnarLoader.getPartitionColumns(HiveColumnarLoader.java:576)
> 	at org.apache.pig.piggybank.storage.HiveColumnarLoader.getSchema(HiveColumnarLoader.java:646)
> 	at org.apache.pig.newplan.logical.relational.LOLoad.getSchemaFromMetaData(LOLoad.java:175)
> 	at org.apache.pig.newplan.logical.relational.LOLoad.<init>(LOLoad.java:89)
> 	at org.apache.pig.parser.LogicalPlanBuilder.buildLoadOp(LogicalPlanBuilder.java:853)
> 	at org.apache.pig.parser.LogicalPlanGenerator.load_clause(LogicalPlanGenerator.java:3479)
> 	at org.apache.pig.parser.LogicalPlanGenerator.op_clause(LogicalPlanGenerator.java:1536)
> 	at org.apache.pig.parser.LogicalPlanGenerator.general_statement(LogicalPlanGenerator.java:1013)
> 	at org.apache.pig.parser.LogicalPlanGenerator.statement(LogicalPlanGenerator.java:553)
> 	at org.apache.pig.parser.LogicalPlanGenerator.query(LogicalPlanGenerator.java:421)
> 	at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:188)
> 	... 20 more
> Caused by: java.io.FileNotFoundException: File /home/jarcec/cloudera/repos/pig/contrib/piggybank/java/simpleDataDir1395623312698/*.txt
does not exist
> 	... 37 more
> {code}
> I've dived into the problem and found a difference in Hadoop implementation of {{DistributedFileSystem}}.
For non existing directory method {{listStatus}} will return {{null}} in [Hadoop 1|https://github.com/apache/hadoop-common/blob/branch-1/src/hdfs/org/apache/hadoop/hdfs/DistributedFileSystem.java#L316]:
> {code}
>     if (thisListing == null) { // the directory does not exist
>       return null;
>     }
> {code}
> But will thrown an exception in [Hadoop 2|https://github.com/apache/hadoop-common/blob/branch-2/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java#L653]:
> {code}
>     if (thisListing == null) { // the directory does not exist
>       throw new FileNotFoundException("File " + p + " does not exist.");
>     }
> {code}



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message