[ https://issues.apache.org/jira/browse/HIVE-6765?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13989148#comment-13989148 ]
Chris Drome commented on HIVE-6765: ----------------------------------- [~adrian-wang] this does not appear to be an issue with hive-0.13 as they are using Kryo for XML serialization. For clarification, I found that several setting can impact whether this problem arises or not. hive.auto.convert.join.noconditionaltask.size is used to determine the big table candidate set. Then hive.mapjoin.smalltable.filesize is used as a cutoff to determine whether a map-size join should be performed. I found that when hive.auto.convert.join is true, it will try to perform a map-side join first. Based on hive.auto.convert.join.noconditionaltask.size it will return a set of big table candidates to the physical optimizer. The physical optimizer will use hive.mapjoin.smalltable.filesize to determine whether the map-side join should proceed. If not the clonePlan method is called, which manifests the problem. I don't think it is solely influenced by the size of the tables involved in the join. In my tests, shrinking the size of the table allows the map-side join to proceed, while increasing the size of the table causes this failure. > ASTNodeOrigin unserializable leads to fail when join with view > -------------------------------------------------------------- > > Key: HIVE-6765 > URL: https://issues.apache.org/jira/browse/HIVE-6765 > Project: Hive > Issue Type: Bug > Affects Versions: 0.12.0 > Reporter: Adrian Wang > Fix For: 0.13.0 > > Attachments: HIVE-6765.patch.1 > > > when a view contains a UDF, and the view comes into a JOIN operation, Hive > will encounter a bug with stack trace like > Caused by: java.lang.InstantiationException: > org.apache.hadoop.hive.ql.parse.ASTNodeOrigin > at java.lang.Class.newInstance0(Class.java:359) > at java.lang.Class.newInstance(Class.java:327) > at sun.reflect.GeneratedMethodAccessor84.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:616) -- This message was sent by Atlassian JIRA (v6.2#6252)