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  1. Apache Drill
  2. DRILL-3665

Deadlock while executing CTAS that runs out of memory

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Details

    • Bug
    • Status: Resolved
    • Critical
    • Resolution: Duplicate
    • 1.2.0
    • 1.11.0
    • Execution - Flow
    • None

    Description

      I had a query running out of memory during CTAS and after that drillbit was rendered unusable:

      0: jdbc:drill:schema=dfs> create table lineitem as select
      . . . . . . . . . . . . >     cast(columns[0] as int) l_orderkey,
      . . . . . . . . . . . . >     cast(columns[1] as int) l_partkey,
      . . . . . . . . . . . . >     cast(columns[2] as int) l_suppkey,
      . . . . . . . . . . . . >     cast(columns[3] as int) l_linenumber,
      . . . . . . . . . . . . >     cast(columns[4] as double) l_quantity,
      . . . . . . . . . . . . >     cast(columns[5] as double) l_extendedprice,
      . . . . . . . . . . . . >     cast(columns[6] as double) l_discount,
      . . . . . . . . . . . . >     cast(columns[7] as double) l_tax,
      . . . . . . . . . . . . >     cast(columns[8] as varchar(200)) l_returnflag,
      . . . . . . . . . . . . >     cast(columns[9] as varchar(200)) l_linestatus,
      . . . . . . . . . . . . >     cast(columns[10] as date) l_shipdate,
      . . . . . . . . . . . . >     cast(columns[11] as date) l_commitdate,
      . . . . . . . . . . . . >     cast(columns[12] as date) l_receiptdate,
      . . . . . . . . . . . . >     cast(columns[13] as varchar(200)) l_shipinstruct,
      . . . . . . . . . . . . >     cast(columns[14] as varchar(200)) l_shipmode,
      . . . . . . . . . . . . >     cast(columns[15] as varchar(200)) l_comment
      . . . . . . . . . . . . > from `lineitem.dat`;
      Error: RESOURCE ERROR: One or more nodes ran out of memory while executing the query.
      Fragment 1:10
      [Error Id: 11084315-5388-4500-b165-642a5f595ebf on atsqa4-133.qa.lab:31010] (state=,code=0)
      

      Here is drill's behavior after that:

      1. Tried to run: "select * from sys.options" in the same sqlline session - hangs.

      2. Was able to start sqlline and connect to drillbit:

      • If you try running anything on this connection: it hangs.
      • Issue ^C --> you will get result if you are lucky (these queries will appear as: "CANCELLATION_REQUESTED" on WebUI)
        (I only tried querying sys.memory, sys.options which possibly have a different code path than queries from actual user data)
      • If you are not lucky, you will get this error below:
                0: jdbc:drill:schema=dfs> show files;
                java.lang.RuntimeException: java.sql.SQLException: Unexpected RuntimeException: java.lang.IllegalArgumentException: Buffer has negative reference count.
                at sqlline.IncrementalRows.hasNext(IncrementalRows.java:73)
                at sqlline.TableOutputFormat$ResizingRowsProvider.next(TableOutputFormat.java:87)
                at sqlline.TableOutputFormat.print(TableOutputFormat.java:118)
                at sqlline.SqlLine.print(SqlLine.java:1583)
                at sqlline.Commands.execute(Commands.java:852)
                at sqlline.Commands.sql(Commands.java:751)
                at sqlline.SqlLine.dispatch(SqlLine.java:738)
                at sqlline.SqlLine.begin(SqlLine.java:612)
                at sqlline.SqlLine.start(SqlLine.java:366)
                at sqlline.SqlLine.main(SqlLine.java:259)
        

      or maybe something like this:

      0: jdbc:drill:schema=dfs> select count(*) from nation group by n_regionkey;
      Error: CONNECTION ERROR: Exceeded timeout (5000) while waiting send intermediate work fragments to remote nodes. Sent 1 and only heard response back from 0 nodes.
      [Error Id: 6abce8e9-78a1-4b3d-bcec-503930482b40 on atsqa4-133.qa.lab:31010] (state=,code=0)
      

      I'm attaching results of a jstack and drillbit.log and so far I was not able to reproduce this problem again (working on it).

      Attachments

        1. drillbit.log.drill-3665
          793 kB
          Victoria Markman
        2. jstack.txt
          103 kB
          Victoria Markman

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              RomanKulyk Roman Kulyk
              vicky Victoria Markman
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                Created:
                Updated:
                Resolved: