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https://issues.apache.org/jira/browse/HIVE-4111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591936#comment-13591936
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Ashutosh Chauhan commented on HIVE-4111:
----------------------------------------
Stack trace from reducer:
{noformat}
Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.ArrayList.remove(ArrayList.java:390)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFLag$LagBuffer.terminate(GenericUDAFLag.java:86)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFLeadLag$GenericUDAFLeadLagEvaluator.terminate(GenericUDAFLeadLag.java:175)
at
org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.evaluate(GenericUDAFEvaluator.java:177)
at
org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.execute(WindowingTableFunction.java:102)
at
org.apache.hadoop.hive.ql.udf.ptf.WindowingTableFunction.execute(WindowingTableFunction.java:62)
at
org.apache.hadoop.hive.ql.exec.PTFOperator.executeChain(PTFOperator.java:282)
at
org.apache.hadoop.hive.ql.exec.PTFOperator.processInputPartition(PTFOperator.java:205)
at
org.apache.hadoop.hive.ql.exec.PTFOperator.processOp(PTFOperator.java:139)
at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:529)
at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:857)
at
org.apache.hadoop.hive.ql.exec.ExtractOperator.processOp(ExtractOperator.java:45)
at org.apache.hadoop.hive.ql.exec.Operator.process(Operator.java:529)
at
org.apache.hadoop.hive.ql.exec.ExecReducer.reduce(ExecReducer.java:256)
{noformat}
> Default value in lag is not handled correctly
> ---------------------------------------------
>
> Key: HIVE-4111
> URL: https://issues.apache.org/jira/browse/HIVE-4111
> Project: Hive
> Issue Type: Bug
> Components: PTF-Windowing
> Reporter: Ashutosh Chauhan
>
> select s, lag(s, 3, 'fred') over (partition by f order by b) from over100k;
> results in runtime exception.
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