[
https://issues.apache.org/jira/browse/HIVE-21798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16850153#comment-16850153
]
Gopal V commented on HIVE-21798:
--------------------------------
I think that is the correct behaviour, as long as you don't provide a ValidTxn
& WriteId list mappings.
> OrcInputFormat#generateSplitsInfo returns 0 splits for a transactional
> delta-only table
> ---------------------------------------------------------------------------------------
>
> Key: HIVE-21798
> URL: https://issues.apache.org/jira/browse/HIVE-21798
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.1.0
> Reporter: Karel Kolman
> Priority: Major
>
> OrcInputFormat#generateSplitsInfo returns 0 splits for acid table which has
> no base - deltas only.
>
> Table data (no base)
> {noformat}
> $ hadoop fs -ls /apps/hive/warehouse/test_table
> drwxr-xr-x - hive hdfs 0 2019-05-28 13:13
> /apps/hive/warehouse/test_table/delta_0000001_0000001_0000
> $ hadoop fs -ls -r /apps/hive/warehouse/test_table/delta_0000001_0000001_0000
> Found 4 items
> -rw-r--r-- 3 hive hdfs 1302 2019-05-28 13:13
> /apps/hive/warehouse/test_table/delta_0000001_0000001_0000/bucket_00002
> -rw-r--r-- 3 hive hdfs 1250 2019-05-28 13:13
> /apps/hive/warehouse/test_table/delta_0000001_0000001_0000/bucket_00001
> -rw-r--r-- 3 hive hdfs 1215 2019-05-28 13:13
> /apps/hive/warehouse/test_table/delta_0000001_0000001_0000/bucket_00000
> -rw-r--r-- 3 hive hdfs 1 2019-05-28 13:13
> /apps/hive/warehouse/test_table/delta_0000001_0000001_0000/_orc_acid_version{noformat}
> Table created with
> {noformat}
> CREATE TABLE test_table (userid bigint)
> clustered by (userid)
> into 3 buckets
> stored as orc
> TBLPROPERTIES ('transactional'='true');
> INSERT INTO TABLE test_table SELECT * FROM source_table;
> {noformat}
>
> Is this expected behavior ?
>
> Change of behavior from earlier Hive versions seems to come from commit
>
> [https://github.com/apache/hive/commit/34b0e07a3bd5002b197b749e3e5a7992e196c237#diff-ede47c0c518f8577dd3895984f019330L1037]
> related to HIVE-17089.
> Earlier Hive versions return valid split data from
> OrcInputFormat#generateSplitsInfo.
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
