[jira] [Created] (HIVE-17001) Insert overwrite table doesn't clean partition directory on HDFS if partition is missing from HMS

["Barna Zsombor Klara (JIRA)" <ji...@apache.org>]

Barna Zsombor Klara created HIVE-17001:
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             Summary: 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


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.




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