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https://issues.apache.org/jira/browse/HIVE-20808?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17338679#comment-17338679
]
Mustafa İman commented on HIVE-20808:
-------------------------------------
This is probably the same issue as
https://issues.apache.org/jira/browse/HIVE-21935
> Queries with map() constructor are slow with vectorization
> ----------------------------------------------------------
>
> Key: HIVE-20808
> URL: https://issues.apache.org/jira/browse/HIVE-20808
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 3.0.0
> Reporter: Matthew Barr
> Priority: Major
>
> Queries involving map operator with vectorization enabled appear to be
> slowing down due to vector UDF adaptor.
> Corresponding jstack for slow task:
> {code:java}
> "TezChild" #23 daemon prio=5 os_prio=0 tid=0x00007f1e44f1b080 nid=0x9419
> runnable [0x00007f1e28137000]
> java.lang.Thread.State: RUNNABLE
> at
> org.apache.hadoop.hive.ql.exec.vector.ColumnVector.ensureSize(ColumnVector.java:232)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector.ensureSize(DecimalColumnVector.java:208)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorAssignRow.assignRowColumn(VectorAssignRow.java:587)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorAssignRow.assignRowColumn(VectorAssignRow.java:350)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.udf.VectorUDFAdaptor.setResult(VectorUDFAdaptor.java:205)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.udf.VectorUDFAdaptor.evaluate(VectorUDFAdaptor.java:146)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.expressions.VectorExpression.evaluateChildren(VectorExpression.java:271)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.expressions.VectorUDFMapIndexBaseScalar.evaluate(VectorUDFMapIndexBaseScalar.java:57)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:146)
>
> at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:965)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:938)
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorFilterOperator.process(VectorFilterOperator.java:136)
>
> at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:965)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:938)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:125)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.deliverVectorizedRowBatch(VectorMapOperator.java:812)
>
> at
> org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:845)
>
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.processRow(MapRecordSource.java:92)
>
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.pushRecord(MapRecordSource.java:76)
>
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.run(MapRecordProcessor.java:419)
>
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:267)
>
> at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:250)
> at
> org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:374)
>
> at
> org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:73)
>
> at
> org.apache.tez.runtime.task.TaskRunner2Callable$1.run(TaskRunner2Callable.java:61)
>
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1730)
>
> at
> org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:61)
>
> at
> org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
>
> at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
> at
> com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:108)
>
> at
> com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:41)
>
> at
> com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:77)
>
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
>
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
>
> at java.lang.Thread.run(Thread.java:748)
> {code}
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