Victoria Markman created DRILL-3665:
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Summary: Deadlock while executing CTAS that runs out of memory
Key: DRILL-3665
URL: https://issues.apache.org/jira/browse/DRILL-3665
Project: Apache Drill
Issue Type: Bug
Components: Execution - Flow
Affects Versions: 1.2.0
Reporter: Victoria Markman
Assignee: Chris Westin
Priority: Critical
I had a query running out of memory during CTAS and after that drillbit was
rendered unusable:
{code}
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)
{code}
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:
{code}
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)
{code}
or maybe something like this:
{code}
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)
{code}
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).
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