You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@pig.apache.org by "zhenyingshan (JIRA)" <ji...@apache.org> on 2013/09/25 14:16:07 UTC
[jira] [Resolved] (PIG-3481) "Unable to check name" message
[ https://issues.apache.org/jira/browse/PIG-3481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhenyingshan resolved PIG-3481.
-------------------------------
Resolution: Fixed
Fix Version/s: 0.11.1
It turns out that because my static PigServer is not thread-safe, I use ThreadLocal and the problem does not appear anymore.
----------------------
private static ThreadLocal<PigServer> pigServer = new ThreadLocal<PigServer>();
public static PigServer getServer() {
if (pigServer.get() == null) {
try {
printClassPath();
Properties prop = SystemUtils.getCfg();
pigServer.set(new PigServer(ExecType.MAPREDUCE, prop));
return pigServer.get();
} catch (Exception e) {
LOG.error("error in starting PigServer:", e);
return null;
}
}
return pigServer.get();
}
> "Unable to check name" message
> ------------------------------
>
> Key: PIG-3481
> URL: https://issues.apache.org/jira/browse/PIG-3481
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.11.1
> Environment: hadoop 1.0.3, hbase 0.94.1
> Reporter: zhenyingshan
> Fix For: 0.11.1
>
>
> I am trying to run a pig script in Java program, I get the following error sometimes but not all the time. Here is the snippet of the program and the exception I've got. I have "/user/root" directory created in hdfs.
> ----------------------
> URL path = getClass().getClassLoader().getResource("cfg/concatall.py");
>
> LOG.info("CDNResolve2Hbase: reading concatall.py file from " + path.toString());
> pigServer.getPigContext().getProperties().setProperty(PigContext.JOB_NAME,
> "CDNResolve2Hbase");
> pigServer.registerQuery("A = load '" + inputPath + "' using PigStorage('\t') as (ip:chararray, do:chararray, cn:chararray, cdn:chararray, firsttime:chararray, updatetime:chararray);");
> pigServer.registerCode(path.toString(),"jython","myfunc");
> pigServer.registerQuery("B = foreach A generate myfunc.concatall('"+ extractTimestamp(inputPath)+"',ip,do,cn), cdn, SUBSTRING(firsttime,0,8);");
> outputTable = "hbase://" + outputTable;
> ExecJob job = pigServer.store("B",outputTable,"org.apache.pig.backend.hadoop.hbase.HBaseStorage('d:cdn d:dtime')");
>
> ---------------------
> org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1000: Error during parsing. Unable to check name hdfs://DC-001:9000/user/root
> at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1607)
> at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1546)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:516)
> at org.apache.pig.PigServer.registerQuery(PigServer.java:529)
> at com.hugedata.cdnserver.datanalysis.CDNResolve2Hbase.execute(Unknown Source)
> at com.hugedata.cdnserver.DatAnalysis.cdnResolve2Hbase(Unknown Source)
> at com.hugedata.cdnserver.task.HandleDomainNameLogTask.execute(Unknown Source)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:273)
> at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:264)
> at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
> at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
> at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
> Caused by: Failed to parse: Pig script failed to parse:
> <line 6, column 4> pig script failed to validate: org.apache.pig.backend.datastorage.DataStorageException: ERROR 6007: Unable to check name hdfs://DC-001:9000/user/root
> at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:191)
> at org.apache.pig.PigServer$Graph.parseQuery(PigServer.java:1599)
> ... 15 more
> Caused by:
> <line 6, column 4> pig script failed to validate: org.apache.pig.backend.datastorage.DataStorageException: ERROR 6007: Unable to check name hdfs://DC-001:9000/user/root
> at org.apache.pig.parser.LogicalPlanBuilder.buildLoadOp(LogicalPlanBuilder.java:835)
> at org.apache.pig.parser.LogicalPlanGenerator.load_clause(LogicalPlanGenerator.java:3236)
> at org.apache.pig.parser.LogicalPlanGenerator.op_clause(LogicalPlanGenerator.java:1315)
> at org.apache.pig.parser.LogicalPlanGenerator.general_statement(LogicalPlanGenerator.java:799)
> at org.apache.pig.parser.LogicalPlanGenerator.statement(LogicalPlanGenerator.java:517)
> at org.apache.pig.parser.LogicalPlanGenerator.query(LogicalPlanGenerator.java:392)
> at org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:184)
> ... 16 more
> Caused by: org.apache.pig.backend.datastorage.DataStorageException: ERROR 6007: Unable to check name hdfs://DC-001:9000/user/root
> at org.apache.pig.backend.hadoop.datastorage.HDataStorage.isContainer(HDataStorage.java:207)
> at org.apache.pig.backend.hadoop.datastorage.HDataStorage.asElement(HDataStorage.java:128)
> at org.apache.pig.backend.hadoop.datastorage.HDataStorage.asElement(HDataStorage.java:138)
> at org.apache.pig.parser.QueryParserUtils.getCurrentDir(QueryParserUtils.java:91)
> at org.apache.pig.parser.LogicalPlanBuilder.buildLoadOp(LogicalPlanBuilder.java:827)
> ... 22 more
> Caused by: java.io.IOException: Filesystem closed
> at org.apache.hadoop.hdfs.DFSClient.checkOpen(DFSClient.java:264)
> at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:873)
> at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:513)
> at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:768)
> at org.apache.pig.backend.hadoop.datastorage.HDataStorage.isContainer(HDataStorage.java:200)
> ... 26 more
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira