[HIVE-21799] NullPointerException in DynamicPartitionPruningOptimization, when join key is on aggregation column

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Query Planning
• Assignee: Jason Dere
• Reporter: Jason Dere
• Created: 28/May/19 21:31
• Updated: 10/May/23 12:33
• Resolved: 12/Jun/19 17:24

Description

Following table/query results in NPE:

create table tez_no_dynpart_hashjoin_on_agg(id int, outcome string, eventid int) stored as orc;

explain select a.id, b.outcome from (select id, max(eventid) as event_id_max from tez_no_dynpart_hashjoin_on_agg group by id) a 
LEFT OUTER JOIN tez_no_dynpart_hashjoin_on_agg b 
on a.event_id_max = b.eventid;

Stack trace:

java.lang.NullPointerException
        at org.apache.hadoop.hive.ql.optimizer.DynamicPartitionPruningOptimization.generateSemiJoinOperatorPlan(DynamicPartitionPruningOptimization.java:608)
        at org.apache.hadoop.hive.ql.optimizer.DynamicPartitionPruningOptimization.process(DynamicPartitionPruningOptimization.java:239)
        at org.apache.hadoop.hive.ql.lib.DefaultRuleDispatcher.dispatch(DefaultRuleDispatcher.java:90)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatchAndReturn(DefaultGraphWalker.java:105)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.dispatch(DefaultGraphWalker.java:89)
        at org.apache.hadoop.hive.ql.lib.ForwardWalker.walk(ForwardWalker.java:74)
        at org.apache.hadoop.hive.ql.lib.DefaultGraphWalker.startWalking(DefaultGraphWalker.java:120)
        at org.apache.hadoop.hive.ql.parse.TezCompiler.runDynamicPartitionPruning(TezCompiler.java:584)
        at org.apache.hadoop.hive.ql.parse.TezCompiler.optimizeOperatorPlan(TezCompiler.java:165)
        at org.apache.hadoop.hive.ql.parse.TaskCompiler.compile(TaskCompiler.java:159)
        at org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.analyzeInternal(SemanticAnalyzer.java:12562)
        at org.apache.hadoop.hive.ql.parse.CalcitePlanner.analyzeInternal(CalcitePlanner.java:370)
        at org.apache.hadoop.hive.ql.parse.BaseSemanticAnalyzer.analyze(BaseSemanticAnalyzer.java:289)
        at org.apache.hadoop.hive.ql.Driver.compile(Driver.java:671)
        at org.apache.hadoop.hive.ql.Driver.compileInternal(Driver.java:1905)
        at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1852)
        at org.apache.hadoop.hive.ql.Driver.compileAndRespond(Driver.java:1847)
        at org.apache.hadoop.hive.ql.reexec.ReExecDriver.compileAndRespond(ReExecDriver.java:126)
        at org.apache.hadoop.hive.ql.reexec.ReExecDriver.run(ReExecDriver.java:219)
        at org.apache.hadoop.hive.cli.CliDriver.processLocalCmd(CliDriver.java:242)
        at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:189)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:408)
        at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:340)
        at org.apache.hadoop.hive.ql.QTestUtil.executeClientInternal(QTestUtil.java:676)
        at org.apache.hadoop.hive.ql.QTestUtil.executeClient(QTestUtil.java:647)
        at org.apache.hadoop.hive.cli.control.CoreCliDriver.runTest(CoreCliDriver.java:182)
        at org.apache.hadoop.hive.cli.control.CliAdapter.runTest(CliAdapter.java:104)
        at org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver(TestMiniLlapLocalCliDriver.java:59)

Issue Links

• duplicates: HIVE-27315 DynamicPartitionPruningOptimization.generateSemiJoinOperatorPlan throws NPE when hive.tez.dynamic.semijoin.reduction=true