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https://issues.apache.org/jira/browse/HIVE-17001?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Barna Zsombor Klara updated HIVE-17001:
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Description:
Insert overwrite table should clear existing data before creating the new data
files.
For a partitioned table we will clean any folder of existing partitions on
HDFS, however if the partition folder exists only on HDFS and the partition
definition is missing in HMS, the folder is not cleared.
Reproduction steps:
1. CREATE TABLE test( col1 string) PARTITIONED BY (ds string);
2. INSERT INTO test PARTITION(ds='p1') values ('a');
3. Copy the data to a different folder with different name.
4. ALTER TABLE test DROP PARTITION (ds='p1');
5. Recreate the partition directory, copy and rename the data file back
6. INSERT OVERWRITE TABLE test PARTITION(ds='p1') values ('b');
7. SELECT * from test;
will result in 2 records being returned instead of 1.
was:
Insert overwrite table should clear existing data before creating the new data
files.
For a partitioned table we will clean any folder of existing partitions on
HDFS, however if the partition folder exists only on HDFS and the partition
definition is missing in HMS, the folder is not cleared.
Reproduction steps:
1. CREATE TABLE test( col1 string) PARTITIONED BY (ds string);
2. INSERT INTO test PARTITION(ds='p1') values ('a');
3. Copy the data to a different folder with different name.
4. ALTER TABLE test DROP PARTITION (ds='p1');
5. Recreate the partition directory, copy and rename the data file back
6. INSERT INTO test PARTITION(ds='p1') values ('b');
7. SELECT * from test;
will result in 2 records being returned instead of 1.
> Insert overwrite table doesn't clean partition directory on HDFS if partition
> is missing from HMS
> -------------------------------------------------------------------------------------------------
>
> Key: HIVE-17001
> URL: https://issues.apache.org/jira/browse/HIVE-17001
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2, Metastore
> Reporter: Barna Zsombor Klara
> Assignee: Barna Zsombor Klara
> Attachments: HIVE-17001.01.patch
>
>
> Insert overwrite table should clear existing data before creating the new
> data files.
> For a partitioned table we will clean any folder of existing partitions on
> HDFS, however if the partition folder exists only on HDFS and the partition
> definition is missing in HMS, the folder is not cleared.
> Reproduction steps:
> 1. CREATE TABLE test( col1 string) PARTITIONED BY (ds string);
> 2. INSERT INTO test PARTITION(ds='p1') values ('a');
> 3. Copy the data to a different folder with different name.
> 4. ALTER TABLE test DROP PARTITION (ds='p1');
> 5. Recreate the partition directory, copy and rename the data file back
> 6. INSERT OVERWRITE TABLE test PARTITION(ds='p1') values ('b');
> 7. SELECT * from test;
> will result in 2 records being returned instead of 1.
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