[jira] [Assigned] (HIVE-16611) Kryo remove field is not working

["Prasanth Jayachandran (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-16611?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prasanth Jayachandran reassigned HIVE-16611:
--------------------------------------------

    Assignee: Prasanth Jayachandran

> Kryo remove field is not working
> --------------------------------
>
>                 Key: HIVE-16611
>                 URL: https://issues.apache.org/jira/browse/HIVE-16611
>             Project: Hive
>          Issue Type: Bug
>          Components: Serializers/Deserializers
>    Affects Versions: 1.2.1
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>
> I have seen some instances where removeField in SerializationUtilities is not working
> {code}
>       removeField(kryo, Operator.class, "colExprMap");
>       removeField(kryo, AbstractOperatorDesc.class, "statistics");
> {code}
> These 2 fields are not expected to be serialized but some stacktraces where custom UDFs are involved these fields are observed in the stacktrace. 
> {code}
> genericUDF (org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc) 
> chidren (org.apache.hadoop.hive.ql.plan.ExprNodeGenericFuncDesc) 
> colExprMap (org.apache.hadoop.hive.ql.exec.SelectOperator) 
> childOperators (org.apache.hadoop.hive.ql.exec.TableScanOperator) 
> aliasToWork (org.apache.hadoop.hive.ql.plan.MapWork) 
> at org.apache.hive.com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125) 
> ...(snip)...
> at org.apache.hive.com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:672) 
> at org.apache.hadoop.hive.ql.exec.Utilities.deserializeObjectByKryo(Utilities.java:1173) 
> at org.apache.hadoop.hive.ql.exec.Utilities.deserializePlan(Utilities.java:1062) 
> at org.apache.hadoop.hive.ql.exec.Utilities.deserializePlan(Utilities.java:1076) 
> {code}
> This needs further investigation. 



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