Can you take a look at [1] and let us know if that helps resolve your issue?
[1] https://drill.apache.org/docs/s3-storage-plugin/#quering-parquet-format-files-on-s3 On Thu, Jun 1, 2017 at 12:55 PM, Raz Baluchi <[email protected]> wrote: > Now that I have Drill working with parquet files on dfs, the next step was > to move the parquet files to S3. > > I get pretty good performance - I can query for events by date range > within 10 seconds. ( out of a total of ~ 800M events across 25 years) > However, there seems to be some threshold beyond which queries start > timing out. > > SYSTEM ERROR: ConnectionPoolTimeoutException: Timeout waiting for > connection from pool > > My first question is, is there a default timeout value to queries against > S3? Anything that takes longer than ~ 150 seconds seems to hit the timeout > error. > > The second question has to do with the possible conditions that trigger the > prolonged query time. It seems that if I increase the filters beyond a > certain number - it doesn't take much - the query times out. > > For example the query: > > select * from events where YEAR in (2012, 2013) works fine - however, > select * from events where YEAR in (2012, 2013, 2014) fails with a timeout. > > To make it worse, I can't use the first query either until I restart > drill... >
