F Méthot created DRILL-5435:
-------------------------------
Summary: Using Limit causes Memory Leaked Error since 1.10
Key: DRILL-5435
URL: https://issues.apache.org/jira/browse/DRILL-5435
Project: Apache Drill
Issue Type: Bug
Components: Storage - Parquet
Affects Versions: 1.10.0
Reporter: F Méthot
Here is the details I can provide:
We migrated our production system from Drill 1.9 to 1.10 just 5 days ago.
(220 nodes cluster)
Our log show there was some 900+ queries ran without problem in first 4 days.
(similar queries, that never use the `limit` clause)
Yesterday we started doing simple adhoc select * ... limit 10 queries (like we
often do, that was our first use of limit with 1.10)
and we got a `Memory was leaked` exception below.
Also, once we get the error, Most of all subsequent user queries fails with
Channel Close Exception. We need to restart Drill to bring it back to normal.
A day later, I used a similar select * limit 10 queries, and the same thing
happen, had to restart Drill.
In the exception, it was refering to a file (1_0_0.parquet)
I moved that file to smaller test cluster (12 nodes) and got the error on the
first attempt. but I am no longer able to reproduce the issue on that file.
Between the 12 and 220 nodes cluster, a different Column name and Row Group
Start was listed in the error.
The parquet file was generated by Drill 1.10.
I tried the same file with a local drill-embedded 1.9 and 1.10 and had no issue.
Here is the error (manually typed), if you think of anything obvious, let us
know.
AsyncPageReader - User Error Occured: Exception Occurred while reading from
disk (can not read class o.a.parquet.format.PageHeader: java.io.IOException:
input stream is closed.)
File:..../1_0_0.parquet
Column: StringColXYZ
Row Group Start: 115215476
[Error Id: ....]
at UserException.java:544)
at
o.a.d.exec.store.parquet.columnreaders.AsyncPageReader.handleAndThrowException(AsynvPageReader.java:199)
at
o.a.d.exec.store.parquet.columnreaders.AsyncPageReader.access(AsynvPageReader.java:81)
at
o.a.d.exec.store.parquet.columnreaders.AsyncPageReader.AsyncPageReaderTask.call(AsyncPageReader.java:483)
at
o.a.d.exec.store.parquet.columnreaders.AsyncPageReader.AsyncPageReaderTask.call(AsyncPageReader.java:392)
at
o.a.d.exec.store.parquet.columnreaders.AsyncPageReader.AsyncPageReaderTask.call(AsyncPageReader.java:392)
...
Caused by: java.io.IOException: can not read class
org.apache.parquet.format.PageHeader: java.io.IOException: Input Stream is
closed.
at o.a.parquet.format.Util.read(Util.java:216)
at o.a.parquet.format.Util.readPageHeader(Util.java:65)
at
o.a.drill.exec.store.parquet.columnreaders.AsyncPageReader(AsyncPageReaderTask:430)
Caused by: parquet.org.apache.thrift.transport.TTransportException: Input
stream is closed
at ...read(TIOStreamTransport.java:129)
at ....TTransport.readAll(TTransport.java:84)
at ....TCompactProtocol.readByte(TCompactProtocol.java:474)
at ....TCompactProtocol.readFieldBegin(TCompactProtocol.java:481)
at ....InterningProtocol.readFieldBegin(InterningProtocol.java:158)
at ....o.a.parquet.format.PageHeader.read(PageHeader.java:828)
at ....o.a.parquet.format.Util.read(Util.java:213)
Fragment 0:0
[Error id: ...]
o.a.drill.common.exception.UserException: SYSTEM ERROR: IllegalStateException:
Memory was leaked by query. Memory leaked: (524288)
Allocator(op:0:0:4:ParquetRowGroupScan) 1000000/524288/39919616/10000000000
at o.a.d.common.exceptions.UserException (UserException.java:544)
at
o.a.d.exec.work.fragment.FragmentExecutor.sendFinalState(FragmentExecutor.java:293)
at o.a.d.exec.work.fragment.FragmentExecutor.cleanup(
FragmentExecutor.java:160)
at o.a.d.exec.work.fragment.FragmentExecutor.run(FragmentExecutor.java:262)
...
Caused by: IllegalStateException: Memory was leaked by query. Memory leaked:
(524288)
at o.a.d.exec.memory.BaseAllocator.close(BaseAllocator.java:502)
at o.a.d.exec.ops.OperatorContextImpl(OperatorContextImpl.java:149)
at o.a.d.exec.ops.FragmentContext.suppressingClose(FragmentContext.java:422)
at o.a.d.exec.ops.FragmentContext.close(FragmentContext.java:411)
at
o.a.d.exec.work.fragment.FragmentExecutor.closeOutResources(FragmentExecutor.java:318)
at
o.a.d.exec.work.fragment.FragmentExecutor.cleanup(FragmentExecutor.java:155)
This fixed the problem:
alter <session|system> set `store.parquet.reader.pagereader.async`=false;
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