"Union all" throws "java.lang.ArrayIndexOutOfBoundsException"

2017-02-07 Thread roncenzhao
// Consider://SEL_1 (int) SEL_2 (int)SEL_3 (double)// If we first merge SEL_1 and SEL_2 into a UNION_1, and then merge UNION_1// with SEL_3 to get UNION_2, then no SelectOperator will be inserted. Hence error// will happen afterwards. The solution here is to insert one after UNION_1, w

[jira] [Created] (HIVE-14797) reducer number estimating may lead to data skew

2016-09-20 Thread roncenzhao (JIRA)
roncenzhao created HIVE-14797: - Summary: reducer number estimating may lead to data skew Key: HIVE-14797 URL: https://issues.apache.org/jira/browse/HIVE-14797 Project: Hive Issue Type