You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hive.apache.org by "zhuwei (JIRA)" <ji...@apache.org> on 2019/01/09 06:12:00 UTC
[jira] [Assigned] (HIVE-21111) ConditionalTask cannot be cast to
MapRedTask
[ https://issues.apache.org/jira/browse/HIVE-21111?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
zhuwei reassigned HIVE-21111:
-----------------------------
> ConditionalTask cannot be cast to MapRedTask
> --------------------------------------------
>
> Key: HIVE-21111
> URL: https://issues.apache.org/jira/browse/HIVE-21111
> Project: Hive
> Issue Type: Bug
> Reporter: zhuwei
> Assignee: zhuwei
> Priority: Major
>
> We met error like this in our product environment:
> java.lang.ClassCastException: org.apache.hadoop.hive.ql.exec.ConditionalTask cannot be cast to org.apache.hadoop.hive.ql.exec.mr.MapRedTask
> at org.apache.hadoop.hive.ql.optimizer.physical.AbstractJoinTaskDispatcher.dispatch(AbstractJoinTaskDispatcher.java:173)
>
> There is a bug in function org.apache.hadoop.hive.ql.optimizer.physical.AbstractJoinTaskDispatcher.dispatch:
> if (tsk.isMapRedTask()) {
> Task<? extends Serializable> newTask = this.processCurrentTask((MapRedTask) tsk,
> ((ConditionalTask) currTask), physicalContext.getContext());
> walkerCtx.addToDispatchList(newTask);
> }
> In the above code, when tsk is instance of ConditionalTask, tsk.isMapRedTask() still can be true, but it cannot be cast to MapRedTask.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)