[HIVE-19808] GenericUDTFGetSplits should support ACID reads in the temp. table read path

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.1.0
• Component/s: Transactions
• Target Version/s: 3.1.0
• Assignee: Eric Wohlstadter
• Reporter: Eric Wohlstadter
• Created: 05/Jun/18 21:32
• Updated: 31/Jul/18 01:32
• Resolved: 08/Jun/18 18:25

Description

1. Map-only reads work on ACID tables.
2. Temp. table reads (for multi-vertex queries) work on non-ACID tables.
3. But temp. table reads don't work on ACID tables.

Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Failed to create temp table: java.lang.IllegalStateException: calling recordValidTxn() more than once in the same txnid:420
	at org.apache.hadoop.hive.ql.udf.generic.GenericUDTFGetSplits.createPlanFragment(GenericUDTFGetSplits.java:303)
	at org.apache.hadoop.hive.ql.udf.generic.GenericUDTFGetSplits.process(GenericUDTFGetSplits.java:202)
	at org.apache.hadoop.hive.ql.exec.UDTFOperator.process(UDTFOperator.java:116)
	at org.apache.hadoop.hive.ql.exec.Operator.baseForward(Operator.java:985)
	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:931)
	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:918)
	at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:95)
	at org.apache.hadoop.hive.ql.exec.Operator.baseForward(Operator.java:985)
	at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:931)
	at org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:125)
	at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:492)
	at org.apache.hadoop.hive.ql.exec.FetchOperator.pushRow(FetchOperator.java:484)
	at org.apache.hadoop.hive.ql.exec.FetchTask.fetch(FetchTask.java:145)
	... 16 more