[jira] [Comment Edited] (HIVE-13083) Writing HiveDecimal to ORC can wrongly suppress present stream

["Prasanth Jayachandran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-13083?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15153610#comment-15153610 ] 

Prasanth Jayachandran edited comment on HIVE-13083 at 2/19/16 2:55 AM:
-----------------------------------------------------------------------

Addressed [~gopalv]'s review comments. Also bumped up the writer version. I will address the stats bug in a separate jira. 


was (Author: prasanth_j):
Addressed [~gopalv]'s review comments. Also bumped up the writer version

> Writing HiveDecimal to ORC can wrongly suppress present stream
> --------------------------------------------------------------
>
>                 Key: HIVE-13083
>                 URL: https://issues.apache.org/jira/browse/HIVE-13083
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 0.13.0, 0.14.0, 1.0.0, 1.2.0, 1.1.0, 1.3.0, 2.0.0, 2.1.0
>            Reporter: Yi Zhang
>            Assignee: Prasanth Jayachandran
>         Attachments: HIVE-13083-branch-1.patch, HIVE-13083.1.patch, HIVE-13083.2.patch
>
>
> HIVE-3976 can cause ORC file to be unreadable. The changes introduced in HIVE-3976 for DecimalTreeWriter can create null values after updating the isPresent stream. https://github.com/apache/hive/blob/branch-0.13/ql/src/java/org/apache/hadoop/hive/ql/io/orc/WriterImpl.java#L1337
> As result of the above return statement, isPresent stream state can become wrong. The isPresent stream thinks all values are non-null and hence suppressed. But the data stream will be of 0 length. When reading such files we will get the following exception
> {code}
> Caused by: java.io.EOFException: Reading BigInteger past EOF from compressed stream Stream for column 3 kind DATA position: 0 length: 0 range: 0 offset: 0 limit: 0
>         at org.apache.hadoop.hive.ql.io.orc.SerializationUtils.readBigInteger(SerializationUtils.java:176)
>         at org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory$DecimalTreeReader.next(TreeReaderFactory.java:1264)
>         at org.apache.hadoop.hive.ql.io.orc.TreeReaderFactory$StructTreeReader.next(TreeReaderFactory.java:2004)
>         at org.apache.hadoop.hive.ql.io.orc.RecordReaderImpl.next(RecordReaderImpl.java:1039)
>         ... 24 more
> {code}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)