Rahul Challapalli created DRILL-4154:
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Summary: Metadata Caching : Upgrading cache to v2 from v1 corrupts
the cache in some scenarios
Key: DRILL-4154
URL: https://issues.apache.org/jira/browse/DRILL-4154
Project: Apache Drill
Issue Type: Bug
Reporter: Rahul Challapalli
Priority: Critical
git.commit.id.abbrev=46c47a2
I copied the data along with the cache file onto maprfs. Now I ran the upgrade
tool (https://github.com/parthchandra/drill-upgrade). Now I ran the
metadata_caching suite from the functional tests (concurrency 10) without the
datagen phase. I see 3 test failures and when I looked at the cache file it
seems to be containing wrong information for the varchar column.
Sample from the cache :
{code}
{
"name" : [ "varchar_col" ]
}, {
"name" : [ "float_col" ],
"mxValue" : 68797.22,
"nulls" : 0
}
{code}
Now I followed the same steps and instead of running the suites I executed the
"REFRESH TABLE METADATA" command or any query on that folder, the cache file
seems to be created properly
I attached the data and cache files required. Let me know if you need anything
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