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Khurram Faraaz commented on DRILL-3038: --------------------------------------- Adding more information about the scenario that leads to these messages. 1. issue a long running SQL query from sqlline (one that runs for long, for several minutes) 2. Ctrl-C on sqlline, where the long running query was issued and is running. 3. issue another SQL query (it can be any query) - this query now HANGS and there is no progress on sqlline prompt or in the drillbit.log 4. cd /opt/mapr/drill/drill-1.0.0/bin stop the Drillbit to which you are connected to 5. ./drillbit.sh stop Then you will see the messages on sqlline prompt. > Error: CONNECTION ERROR: Connection null <--> null (user client) closed > unexpectedly. > ------------------------------------------------------------------------------------- > > Key: DRILL-3038 > URL: https://issues.apache.org/jira/browse/DRILL-3038 > Project: Apache Drill > Issue Type: Bug > Components: Execution - Flow > Affects Versions: 1.0.0 > Reporter: Khurram Faraaz > Assignee: Chris Westin > Priority: Minor > > When I stop a Drillbit using drillbit.sh stop on which a SQL query is hung, I > see these messages on sqlline prompt > {code} > 0: jdbc:drill:schema=dfs.tmp> select count(*) from `twoKeyJsn.json`; > Error: CONNECTION ERROR: Connection null <--> null (user client) closed > unexpectedly. > [Error Id: 53fdea70-6bf9-4dd7-914f-8ad1390bcfc9 ] (state=,code=0) > 0: jdbc:drill:schema=dfs.tmp> +------------+------------+ > . . . . . . . . . . . . . . > 1,803,958 rows selected (37.233 seconds) > . . . . . . . . . . . . . . > 0: jdbc:drill:schema=dfs.tmp> select count(*) > from `twoKeyJsn.json`; > Error: CONNECTION ERROR: Connection null <--> null (user client) closed > unexpectedly. > [Error Id: 05f13b36-545b-4428-a547-d70d537643cf ] (state=,code=0) > 0: jdbc:drill:schema=dfs.tmp> > 0: jdbc:drill:schema=dfs.tmp> +------------+------------+ > . . . . . . . . . . . . . . > 1,803,958 rows selected (37.233 seconds) > . . . . . . . . . . . . . . > 0: jdbc:drill:schema=dfs.tmp> select count(*) > from `twoKeyJsn.json`; > Error: CONNECTION ERROR: Connection null <--> null (user client) closed > unexpectedly. > [Error Id: 9d546618-7be7-4fa9-8655-37e2725805b0 ] (state=,code=0) > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)