[
https://issues.apache.org/jira/browse/HIVE-21798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Karel Kolman updated HIVE-21798:
--------------------------------
Description:
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.
was:
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.
> 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.
>
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