[ https://issues.apache.org/jira/browse/HIVE-7643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Chengxiang Li updated HIVE-7643: -------------------------------- Summary: ExecMapper static states lead to unpredictable query result.[Spark Branch] (was: ExecMapper statis states lead to unpredictable query result.[Spark Branch]) > ExecMapper static states lead to unpredictable query result.[Spark Branch] > -------------------------------------------------------------------------- > > Key: HIVE-7643 > URL: https://issues.apache.org/jira/browse/HIVE-7643 > Project: Hive > Issue Type: Bug > Components: Spark > Reporter: Chengxiang Li > Assignee: Chengxiang Li > > ExecMapper contain static states, static variable "done" for example. Spark > executor may execute multi tasks concurrently, ExecMapper static state > updated by one task would influence the logic of another task, which may lead > to unpredictable result. To reproduce, execute > {code:sql} > SELECT COUNT(*) FROM TEST TABLESAMPLE(1 ROWS) s > {code}, > TEST should be a table with several blocks source data. -- This message was sent by Atlassian JIRA (v6.2#6252)