flink-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Fabian Hueske <fhue...@gmail.com>
Subject Re: Stateful Stream Processing with RocksDB causing Job failure
Date Wed, 21 Dec 2016 09:25:39 GMT
Copying my reply from the other thread with the same issue to have the
discussion in one place.

------

Hi Abiy,

to which type of filesystem are you persisting your checkpoints?

We have seen problems with S3 and its consistency model. These issues have
been addressed in newer versions of Flink.
Not sure if the fix went into 1.1.3 already but release 1.1.4 is currently
voted on and has tons of other bug fixes as well.
I would suggest to upgrade to 1.1.3 or even 1.1.4 once it is released
(should happen in a few days if no regression is found).

Best, Fabian

2016-12-21 10:12 GMT+01:00 Ufuk Celebi <uce@apache.org>:

> Hey Abiy!
>
> - Do all the task managers run on a single host? Only then using the
> local file system will work.
>
> - What does every now and then mean? Every time when the job tries to
> take a snapshot? After restarts?
>
> The JobManager logs will also help if we can't figure this out like this.
>
> Best,
>
> Ufuk
>
> On Tue, Dec 20, 2016 at 6:05 PM, Abiy Legesse Hailemichael
> <abiybirtukan@gmail.com> wrote:
> > I am running a standalone flink cluster (1.1.2) and I have a stateful
> > streaming job that uses RocksDB as a state manager. I have two stateful
> > operators that are using ValueState<> and ListState<>. Every now and
> then my
> > job fails with the following exception
> >
> > java.lang.Exception: Could not restore checkpointed state to operators
> and
> > functions
> >       at
> > org.apache.flink.streaming.runtime.tasks.StreamTask.
> restoreState(StreamTask.java:552)
> >       at
> > org.apache.flink.streaming.runtime.tasks.StreamTask.
> invoke(StreamTask.java:250)
> >       at org.apache.flink.runtime.taskmanager.Task.run(Task.java:584)
> >       at java.lang.Thread.run(Thread.java:745)
> > Caused by: java.io.FileNotFoundException: File
> > file:/data/flink/checkpoints/226c84df02e47d1b9c036ba8945031
> 45/StreamMap_12_5/dummy_state/chk-83
> > does not exist
> >       at
> > org.apache.hadoop.fs.RawLocalFileSystem.deprecatedGetFileStatus(
> RawLocalFileSystem.java:609)
> >       at
> > org.apache.hadoop.fs.RawLocalFileSystem.getFileLinkStatusInternal(
> RawLocalFileSystem.java:822)
> >       at
> > org.apache.hadoop.fs.RawLocalFileSystem.getFileStatus(
> RawLocalFileSystem.java:599)
> >       at
> > org.apache.hadoop.fs.FilterFileSystem.getFileStatus(
> FilterFileSystem.java:421)
> >       at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:337)
> >       at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:289)
> >       at
> > org.apache.hadoop.fs.LocalFileSystem.copyToLocalFile(
> LocalFileSystem.java:88)
> >       at org.apache.hadoop.fs.FileSystem.copyToLocalFile(
> FileSystem.java:1975)
> >       at
> > org.apache.flink.streaming.util.HDFSCopyToLocal$1.run(
> HDFSCopyToLocal.java:48)
> >
> >
> > Can someone help me with this, Is this  a known issue ?
> >
> > Thanks
> >
> > Abiy Hailemichael
> > Software Engineer
> > Email: abiybirtukan@gmail.com
> >
>

Mime
View raw message