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