Chao created HIVE-8810: -------------------------- Summary: Make HashTableSinkOperator works for Spark Branch [Spark Branch] Key: HIVE-8810 URL: https://issues.apache.org/jira/browse/HIVE-8810 Project: Hive Issue Type: Sub-task Components: Spark Affects Versions: spark-branch Reporter: Chao
In MR, all small tables for a particular MJ operator share the same instance of {{HashTableSinkOperator}}, while in Spark branch, each small table corresponds to a different {{HashTableSinkOperator}} instance. This difference causes some issues. For instance, in {{HashTableSinkOperator#processOp}}, it uses a tag to look for information in various data structures, such as {{joinKeys}}, {{filterMaps}}, {{joinValues}}, etc. Those data structures stores the information BEFORE it splits the MJ operator with its parents. But, since later on we use separate {{HashTableSinkOperator}} for each small table, that information is no longer valid, and thus this method will fail. This JIRA is to track and solve these related issues. -- This message was sent by Atlassian JIRA (v6.3.4#6332)