Venkata krishnan Sowrirajan created DRILL-1399:
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Summary: Drill-bit process threads keeps on increasing
Key: DRILL-1399
URL: https://issues.apache.org/jira/browse/DRILL-1399
Project: Apache Drill
Issue Type: Bug
Reporter: Venkata krishnan Sowrirajan
I actually found increasing number of threads in drill-bit process whenever an
exception occurs and the threads are in BLOCKED state.
So this is what I am trying to do.
"select columns[0], columns[1] from `/data.csv` where columns[0] > 500000 limit
100;" This query fails with a NumberFormatException because the column header
is having a string which is understandable. So if I do the same query again and
again, some of the drill-bit threads goes into waiting state forever. And for
the new query another set of threads are spawned which increases the number of
threads with in the drillbit process over a period of time. Have anyone seen
similar scenario? Wouldn't this overload the process over a period of time?
Please let me know if you need any other details. I have the JStack output
taken from drillbit process after running the query every time.
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