Matthew Barr created HIVE-20808:
-----------------------------------
Summary: 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
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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