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From Flavio Pompermaier <pomperma...@okkam.it>
Subject Re: No Space Left on Device
Date Wed, 03 Dec 2014 17:02:58 GMT
I think I can answer on behalf of Stefano that is busy right now..the job
failed because on the job manager (that is also a task manager) the temp
folder was full.
We would like to understand how big should be the temp directory..which
parameters should we consider to make that computation?

On Wed, Dec 3, 2014 at 5:22 PM, Ufuk Celebi <uce@apache.org> wrote:

> The task managers log the temporary directories at start up. Can you have
> a look there and verify that you configured the temporary directories
> correctly?
>
> On Wed, Dec 3, 2014 at 5:17 PM, Stephan Ewen <sewen@apache.org> wrote:
>
>> Hi!
>>
>> That exception means that one of the directories is full. If you have
>> several temp directories on different disks, you can add them all to the
>> config and the temp files will be rotated across the disks.
>>
>> The exception may come once the first temp directory is full. For
>> example, if you have 4 temp dirs (where 1 is rather full while the others
>> have a lot of space), it may be that one temp file on the full directory
>> grows large and exceeds the space, while the other directories have plenty
>> of space.
>>
>> Greetings,
>> Stephan
>>
>>
>> On Wed, Dec 3, 2014 at 4:40 PM, Robert Metzger <rmetzger@apache.org>
>> wrote:
>>
>>> Hi,
>>>
>>> I think Flink is deleting its temporary files.
>>>
>>> Is the temp. path set to the SSD on each machine?
>>> What is the size of the two data sets your are joining? Your cluster
>>> has 6*256GB = 1.5 TB of temporary disk space.
>>> Maybe only the temp directory of one node is full?
>>>
>>>
>>>
>>>
>>> On Wed, Dec 3, 2014 at 3:52 PM, Ufuk Celebi <uce@apache.org> wrote:
>>>
>>>> Hey Stefano,
>>>>
>>>> I would wait for Stephan's take on this, but with caught IOExceptions
>>>> the hash table should properly clean up after itself and delete the file.
>>>>
>>>> Can you still reproduce this problem for your use case?
>>>>
>>>> – Ufuk
>>>>
>>>>
>>>> On Tue, Dec 2, 2014 at 7:07 PM, Stefano Bortoli <s.bortoli@gmail.com>
>>>> wrote:
>>>>
>>>>> Hi guys,
>>>>>
>>>>> a quite long process failed due to this No Space Left on Device
>>>>> exception, but the machine disk is not full at all.
>>>>>
>>>>> okkam@okkam-nano-2:/opt/flink-0.8$ df
>>>>> Filesystem     1K-blocks     Used Available Use% Mounted on
>>>>> /dev/sdb2      223302236 22819504 189116588  11% /
>>>>> none                   4        0         4   0% /sys/fs/cgroup
>>>>> udev             8156864        4   8156860   1% /dev
>>>>> tmpfs            1633520      524   1632996   1% /run
>>>>> none                5120        0      5120   0% /run/lock
>>>>> none             8167584        0   8167584   0% /run/shm
>>>>> none              102400        0    102400   0% /run/user
>>>>> /dev/sdb1         523248     3428    519820   1% /boot/efi
>>>>> /dev/sda1      961302560  2218352 910229748   1% /media/data
>>>>> cm_processes     8167584    12116   8155468   1%
>>>>> /run/cloudera-scm-agent/process
>>>>>
>>>>> Is it possible that the temporary files were deleted 'after the
>>>>> problem'? I read so, but there was no confirmation. However, it is a
256SSD
>>>>> disk. Each of the 6 nodes has it.
>>>>>
>>>>> Here is the stack trace:
>>>>>
>>>>> 16:37:59,581 ERROR
>>>>> org.apache.flink.runtime.operators.RegularPactTask            - Error
in
>>>>> task code:  CHAIN Join
>>>>> (org.okkam.flink.maintenance.deduplication.consolidate.Join2ToGetCandidates)
>>>>> -> Filter
>>>>> (org.okkam.flink.maintenance.deduplication.match.SingleMatchFilterFunctionWithFlagMatch)
>>>>> -> Map
>>>>> (org.okkam.flink.maintenance.deduplication.match.MapToTuple3MapFunction)
->
>>>>> Combine(org.apache.flink.api.java.operators.DistinctOperator$DistinctFunction)
>>>>> (4/28)
>>>>> java.io.IOException: The channel is erroneous.
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.ChannelAccess.checkErroneous(ChannelAccess.java:132)
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.BlockChannelWriter.writeBlock(BlockChannelWriter.java:73)
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.ChannelWriterOutputView.writeSegment(ChannelWriterOutputView.java:218)
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.ChannelWriterOutputView.nextSegment(ChannelWriterOutputView.java:204)
>>>>>     at
>>>>> org.apache.flink.runtime.memorymanager.AbstractPagedOutputView.advance(AbstractPagedOutputView.java:140)
>>>>>     at
>>>>> org.apache.flink.runtime.memorymanager.AbstractPagedOutputView.writeByte(AbstractPagedOutputView.java:223)
>>>>>     at
>>>>> org.apache.flink.runtime.memorymanager.AbstractPagedOutputView.write(AbstractPagedOutputView.java:173)
>>>>>     at
>>>>> org.apache.flink.types.StringValue.writeString(StringValue.java:808)
>>>>>     at
>>>>> org.apache.flink.api.common.typeutils.base.StringSerializer.serialize(StringSerializer.java:68)
>>>>>     at
>>>>> org.apache.flink.api.common.typeutils.base.StringSerializer.serialize(StringSerializer.java:28)
>>>>>     at
>>>>> org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:95)
>>>>>     at
>>>>> org.apache.flink.api.java.typeutils.runtime.TupleSerializer.serialize(TupleSerializer.java:30)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.hash.HashPartition.insertIntoProbeBuffer(HashPartition.java:269)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.hash.MutableHashTable.processProbeIter(MutableHashTable.java:474)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.hash.MutableHashTable.nextRecord(MutableHashTable.java:537)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.hash.BuildSecondHashMatchIterator.callWithNextKey(BuildSecondHashMatchIterator.java:106)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.MatchDriver.run(MatchDriver.java:148)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.RegularPactTask.run(RegularPactTask.java:484)
>>>>>     at
>>>>> org.apache.flink.runtime.operators.RegularPactTask.invoke(RegularPactTask.java:359)
>>>>>     at
>>>>> org.apache.flink.runtime.execution.RuntimeEnvironment.run(RuntimeEnvironment.java:246)
>>>>>     at java.lang.Thread.run(Thread.java:745)
>>>>> Caused by: java.io.IOException: No space left on device
>>>>>     at sun.nio.ch.FileDispatcherImpl.write0(Native Method)
>>>>>     at sun.nio.ch.FileDispatcherImpl.write(FileDispatcherImpl.java:60)
>>>>>     at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:93)
>>>>>     at sun.nio.ch.IOUtil.write(IOUtil.java:65)
>>>>>     at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:205)
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.SegmentWriteRequest.write(BlockChannelAccess.java:259)
>>>>>     at
>>>>> org.apache.flink.runtime.io.disk.iomanager.IOManager$WriterThread.run(IOManager.java:636)
>>>>>
>>>>>
>>>>
>>>
>>
>

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