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From Salou Guillaume <g.sa...@gmail.com>
Subject Problem with Pig 0.16 and Phoenix 4.8
Date Mon, 26 Sep 2016 15:49:41 GMT
Hi,

I use Phoenix since 1 year under Phoenix 4.6 / Pig 0.12 / Cloudera CDH 5.4.1

Since we have migrated to pig 0.16 / Phoenix 4.8 / Hadoop 2.7 / JDK
1.8  load and store are broken.

We always have reducers fail, sometimes job fails sometimes it succeded :

2016-09-26 14:48:37,509 WARN [main]
org.apache.hadoop.mapred.YarnChild: Exception running child :
java.io.IOException: java.lang.ClassNotFoundException: Class  not
found
	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit.readFields(PigSplit.java:236)
	at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:71)
	at org.apache.hadoop.io.serializer.WritableSerialization$WritableDeserializer.deserialize(WritableSerialization.java:42)
	at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:372)
	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:754)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: java.lang.ClassNotFoundException: Class  not found
	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2101)
	at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigSplit.readFields(PigSplit.java:224)
	... 10 more


We register phoenix jars like this :

REGISTER '/opt/apache-phoenix-4.8.0-HBase-1.2-bin/phoenix-pig-4.8.0-HBase-1.2.jar';
REGISTER '/opt/apache-phoenix-4.8.0-HBase-1.2-bin/phoenix-4.8.0-HBase-1.2-client.jar';


I've found same issues :

https://scholar.live/question/class-not-found-with-no-class-name-when-store-using-org-apache-phoenix-pig-phoenixhbasestorage

http://stackoverflow.com/questions/31509889/classnotfoundexception-with-no-class-name


PigScrits which are not using Phoenix are OK.

On org.apache.phoenix.pig.PhoenixHBaseStorage we seems to have more
problems with

ERROR 0: java.lang.ClassCastException: org.joda.time.DateTime cannot be cast to

org.apache.phoenix.shaded.org.joda.time.DateTime


and related to : https://issues.apache.org/jira/browse/PHOENIX-3240


We are switching all our cluster to java 1.7.


Any remark, advice, feedback on this kind of problem could be of great help.



Guillaume

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