[
https://issues.apache.org/jira/browse/HIVE-25893?focusedWorklogId=714657&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-714657
]
ASF GitHub Bot logged work on HIVE-25893:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 25/Jan/22 16:36
Start Date: 25/Jan/22 16:36
Worklog Time Spent: 10m
Work Description: soumyakanti3578 opened a new pull request #2970:
URL: https://github.com/apache/hive/pull/2970
Refactor `compareBytesColumnVector(BytesColumnVector cv1, BytesColumnVector
cv2)` for better readability, and copy `lcv.child.isNull` to `resultCV.isNull`
which was not getting updated earlier.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: gitbox-unsubscr...@hive.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
Issue Time Tracking
-------------------
Worklog Id: (was: 714657)
Time Spent: 20m (was: 10m)
> NPE when reading Parquet data because ColumnVector isNull[] is not updated
> --------------------------------------------------------------------------
>
> Key: HIVE-25893
> URL: https://issues.apache.org/jira/browse/HIVE-25893
> Project: Hive
> Issue Type: Bug
> Reporter: Soumyakanti Das
> Assignee: Soumyakanti Das
> Priority: Major
> Labels: pull-request-available
> Time Spent: 20m
> Remaining Estimate: 0h
>
> In
> [VectorizedListColumnReader.java|https://github.com/apache/hive/blob/595f3bc9d612f02581bd3377ee0107efd6553ae6/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedListColumnReader.java]
> {{isNull[]}} is used in the comparison methods ( eg.
> [columnVectorsDifferNullForSameIndex
> |https://github.com/apache/hive/blob/595f3bc9d612f02581bd3377ee0107efd6553ae6/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedListColumnReader.java#L524]
> ), however, {{isNull}} is always {{false}} as it is never updated in
> [getChildData|https://github.com/apache/hive/blob/595f3bc9d612f02581bd3377ee0107efd6553ae6/ql/src/java/org/apache/hadoop/hive/ql/io/parquet/vector/VectorizedListColumnReader.java#L401].
> This could result in NullPointerException like,
> {code}
> Caused by: java.lang.NullPointerException
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.compareBytesColumnVector(VectorizedListColumnReader.java:506)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.compareColumnVector(VectorizedListColumnReader.java:432)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.setIsRepeating(VectorizedListColumnReader.java:367)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.convertValueListToListColumnVector(VectorizedListColumnReader.java:360)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedListColumnReader.readBatch(VectorizedListColumnReader.java:83)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedMapColumnReader.readBatch(VectorizedMapColumnReader.java:57)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.nextBatch(VectorizedParquetRecordReader.java:438)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:377)
> at
> org.apache.hadoop.hive.ql.io.parquet.vector.VectorizedParquetRecordReader.next(VectorizedParquetRecordReader.java:100)
> at
> org.apache.hadoop.hive.ql.io.HiveContextAwareRecordReader.doNext(HiveContextAwareRecordReader.java:375)
> {code}
--
This message was sent by Atlassian Jira
(v8.20.1#820001)
