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From "Rahul Challapalli (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-3829) Metadata Caching : Drill should ignore a corrupted cache file
Date Wed, 23 Sep 2015 18:16:04 GMT
Rahul Challapalli created DRILL-3829:
----------------------------------------

             Summary: Metadata Caching : Drill should ignore a corrupted cache file
                 Key: DRILL-3829
                 URL: https://issues.apache.org/jira/browse/DRILL-3829
             Project: Apache Drill
          Issue Type: Bug
          Components: Metadata
            Reporter: Rahul Challapalli
            Assignee: Mehant Baid


git.commit.id.abbrev=3c89b30

Drill should validate the cache file structure and ignore it if it detects any corruption
to its contents.

I placed an empty cache file in the directory and executed a count(*) query on top of the
directory. Below is what I got
{code}
select count(*) from dfs.`/drill/testdata/metadata_caching/lineitem`;
Error: SYSTEM ERROR: JsonMappingException: No content to map due to end-of-input
 at [Source: com.mapr.fs.MapRFsDataInputStream@293240cd; line: 1, column: 1]


[Error Id: 88f77d37-aff3-4adc-bb0e-6c13b49e7776 on qa-node190.qa.lab:31010] (state=,code=0)
{code}

At the very least we should inform that the cache file has been corrupted.




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