Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Pig, mail # user - Questions about pig-0.9.1 e2e tests


Copy link to this message
-
Re:Re: Questions about pig-0.9.1 e2e tests
lulynn_2008 2012-02-15, 01:38
Thank you for your detail.
Most tests failed with following errors, please give your suggestions:

ERROR 2999: Unexpected internal error. Failed to create DataStorage
java.lang.RuntimeException: Failed to create DataStorage
        at org.apache.pig.backend.hadoop.datastorage.HDataStorage.init(HDataStorage.java:75)
        at org.apache.pig.backend.hadoop.datastorage.HDataStorage.<init>(HDataStorage.java:58)
        at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:214)
        at org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.init(HExecutionEngine.java:134)
        at org.apache.pig.impl.PigContext.connect(PigContext.java:183)
        at org.apache.pig.PigServer.<init>(PigServer.java:226)
        at org.apache.pig.PigServer.<init>(PigServer.java:215)
        at org.apache.pig.tools.grunt.Grunt.<init>(Grunt.java:55)
        at org.apache.pig.Main.run(Main.java:492)
        at org.apache.pig.Main.main(Main.java:107)
Caused by: java.io.IOException: Call to svltest150.svl.ibm.com/9.30.225.100:9000 failed on local exception: java.io.EOFException
        at org.apache.hadoop.ipc.Client.wrapException(Client.java:775)
        at org.apache.hadoop.ipc.Client.call(Client.java:743)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220)
        at $Proxy0.getProtocolVersion(Unknown Source)
        at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359)
        at org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106)
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:207)
        at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:170)
        at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82)
        at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1378)
        at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66)
        at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1390)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:196)
        at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95)
        at org.apache.pig.backend.hadoop.datastorage.HDataStorage.init(HDataStorage.java:72)
        ... 9 more
Caused by: java.io.EOFException
        at java.io.DataInputStream.readInt(DataInputStream.java:386)
        at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501)
        at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446)
At 2012-02-14 22:53:07,"Alan Gates" <[EMAIL PROTECTED]> wrote:
>
>On Feb 14, 2012, at 6:17 AM, lulynn_2008 wrote:
>
>> Hi,
>> I am doing e2e testing to pig-0.9.1. Here is my reference: https://cwiki.apache.org/confluence/display/PIG/HowToTest
>> Please give your suggestions to following questions:
>> 1. The tests needs a cluster which includes a Name Node/Job Tracker and three for Data Node/Task Trackers. Where is the cluster information saved? Are they saved in hadoop conf files?
>Pig uses the standard Hadoop configuration files (mapred-site.xml, core-site.xml, hdfs-site.xml) to find cluster information.  If you set harness.hadoop.home to the directory where you installed Hadoop when you call ant test-e2e (it will fail if you don't) these will automatically get picked up.
>
>> 2. I assume the tests need a hadoop cluster environment, and just install pig(low version and pig-0.9.1) and run the test cmds in Name Node.Name Node/Job Tracker to generate test data. Please correct me if I was wrong.
>
>Any machine that has access to the cluster and has Hadoop installed on it with the same configuration files as your cluster will work.  It need not be the NN/JT specifically.  But that machine will work fine.
>
>> 3. Is there any data transfer between nodes in clusters during generating test data and testing? If yes, when happened?
>
>Yes, the harness generates data on the machine it's run on and then does a copyFromLocal to load it into HDFS.
>>
>> Thank you.
>
>Alan.