Matt McCline created HIVE-13659:
-----------------------------------
Summary: An empty where condition leads to vectorization
exceptions instead of throwing a compile time error
Key: HIVE-13659
URL: https://issues.apache.org/jira/browse/HIVE-13659
Project: Hive
Issue Type: Bug
Components: Hive
Reporter: Matt McCline
Assignee: Matt McCline
Priority: Critical
Fix For: 2.1.0
A partial query
select count (distinct field) from table where field;
Note the missing 'field=value'
resulted in the following error in task logs, instead of failing early during
compile
{code}
org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:173)
at
org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:139)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:344)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:181)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable$1.run(TezTaskRunner.java:172)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:172)
at
org.apache.tez.runtime.task.TezTaskRunner$TaskRunnerCallable.callInternal(TezTaskRunner.java:168)
at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException:
org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
processing row
at
org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.processRow(MapRecordSource.java:91)
at
org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.pushRecord(MapRecordSource.java:68)
at
org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.run(MapRecordProcessor.java:326)
at
org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:150)
... 14 more
Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error
while processing row
at
org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:52)
at
org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.processRow(MapRecordSource.java:83)
... 17 more
Caused by: java.lang.ClassCastException:
org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector cannot be cast to
org.apache.hadoop.hive.ql.exec.vector.LongColumnVector
at
org.apache.hadoop.hive.ql.exec.vector.expressions.SelectColumnIsTrue.evaluate(SelectColumnIsTrue.java:46)
at
org.apache.hadoop.hive.ql.exec.vector.VectorFilterOperator.process(VectorFilterOperator.java:106)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:838)
at
org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:97)
at
org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:164)
at
org.apache.hadoop.hive.ql.exec.vector.VectorMapOperator.process(VectorMapOperator.java:45)
... 18 more
{code}
Comment by Gunther:
I think this works by implicitly converting the expr to boolean (if a cast is
necessary). This query looks legal to me and probably needs to be handle in
Vectorization
Comment by Ashutosh:
Oracle, postgres & sql server throws error for this if type of field is not
boolean. However, MySQL & Hive (with vectorization off) executes the query by
implicitly adding a cast to boolean. Hive shall be consistent in its behavior
regardless whether vectorization is on or off.
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