Rahul Challapalli created DRILL-4424:
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Summary: Metadata cache file emptied when the drillbit process
does not have write permissions
Key: DRILL-4424
URL: https://issues.apache.org/jira/browse/DRILL-4424
Project: Apache Drill
Issue Type: Bug
Components: Metadata
Affects Versions: 1.6.0
Reporter: Rahul Challapalli
Commit # : bb3fc15216d9cab804fc9a6f0e5bd34597dd4394
Commit Date : Dec 7, 2015
I have a directory "lineitem" on maprfs which contains a metadata cache file.
Both the folder and cache file are owned by root.
Now I started drill as user "mapr" and ran "refresh table metadata....."
command on "lineitem" and below is the result
{code}
0: jdbc:drill:zk=10.10.100.183:5181> refresh table metadata
dfs.`/drill/testdata/metadata_caching/lineitem`;
+----+---------+
| ok | summary |
+----+---------+
| false | Error: 2049.1804.436520
/drill/testdata/metadata_caching/lineitem/.drill.parquet_metadata (Permission
denied) |
+----+---------+
1 row selected (0.403 seconds)
{code}
Two issues here :
{code}
1. Running the above command actually empties the metadata cache file.
2. Without the cache file, the user "mapr" has permissions to read the data in
directory "lineitem". However when there is cache file in the directory (owned
by "root") I get back the above error. So the presence of the cache file is
changing the outcome of the query.
{code}
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