My current workaround is to completely delete the state store and rebuild
it from scratch.
Le mar. 31 mars 2020 à 21:39, Boyang Chen <reluctanthero...@gmail.com> a
écrit :
> Thanks Nicolas for the report, so are you suggesting that you couldn't turn
> on compactions for the state store? Is there a workaround?
>
> On Tue, Mar 31, 2020 at 9:54 AM Nicolas Carlot <
> nicolas.car...@chronopost.fr>
> wrote:
>
> > After some more testing and debugging, it seems that it is caused by the
> > compaction option I've configured for RocksDB. When removed everything is
> > fine...
> > The option is as follow:
> >
> > CompactionOptionsFIFO fifoOptions = new CompactionOptionsFIFO();
> > fifoOptions.setMaxTableFilesSize(maxSize);
> > fifoOptions.setAllowCompaction(true);
> > options.setCompactionOptionsFIFO(fifoOptions);
> > options.setCompactionStyle(CompactionStyle.FIFO);
> >
> > Le mar. 31 mars 2020 à 16:27, Nicolas Carlot <
> nicolas.car...@chronopost.fr
> > >
> > a écrit :
> >
> > > Hello everyone,
> > >
> > > I'm currently facing an issue with RocksDb internal compaction process,
> > > which occurs when the local state store of several of my KafkaStream
> > > applications are being restored. This is sadly a huge concern as it
> > > completely discard resiliency over node failure as those often lead to
> a
> > > state store restoration. The only workaround I currently have is to
> > delete
> > > the local store to restore it from scratch. I'm using version 2.4.1 of
> > the
> > > Java libraries.
> > >
> > > The exception thrown by the KStream process is:
> > > org.apache.kafka.streams.errors.ProcessorStateException: Error while
> > range
> > > compacting during restoring store merge_store
> > > at
> > >
> >
> org.apache.kafka.streams.state.internals.RocksDBStore$SingleColumnFamilyAccessor.toggleDbForBulkLoading(RocksDBStore.java:615)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.state.internals.RocksDBStore.toggleDbForBulkLoading(RocksDBStore.java:398)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.state.internals.RocksDBStore$RocksDBBatchingRestoreCallback.onRestoreStart(RocksDBStore.java:644)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.CompositeRestoreListener.onRestoreStart(CompositeRestoreListener.java:59)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StateRestorer.restoreStarted(StateRestorer.java:76)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StoreChangelogReader.startRestoration(StoreChangelogReader.java:211)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StoreChangelogReader.initialize(StoreChangelogReader.java:185)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StoreChangelogReader.restore(StoreChangelogReader.java:81)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.TaskManager.updateNewAndRestoringTasks(TaskManager.java:389)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:769)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:698)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:671)
> > > [kafka-stream-router.jar:?]
> > > Caused by: org.rocksdb.RocksDBException: Target level exceeds number of
> > > levels
> > > at org.rocksdb.RocksDB.compactRange(Native Method)
> > > ~[kafka-stream-router.jar:?]
> > > at org.rocksdb.RocksDB.compactRange(RocksDB.java:2636)
> > > ~[kafka-stream-router.jar:?]
> > > at
> > >
> >
> org.apache.kafka.streams.state.internals.RocksDBStore$SingleColumnFamilyAccessor.toggleDbForBulkLoading(RocksDBStore.java:613)
> > > ~[kafka-stream-router.jar:?]
> > > ... 11 more
> > >
> > > Here is the state of partition 0_0 of one of those stores:
> > > -rw-r--r-- 1 java j2ee 148210568 31 mars 10:49 000139.sst
> > > -rw-r--r-- 1 java j2ee 21620385 31 mars 11:06 000184.sst
> > > -rw-r--r-- 1 java j2ee 0 31 mars 11:11 000198.log
> > > -rw-r--r-- 1 java j2ee 31602468 31 mars 11:31 000251.sst
> > > -rw-r--r-- 1 java j2ee 37856549 31 mars 12:00 000324.sst
> > > -rw-r--r-- 1 java j2ee 33498822 31 mars 12:26 000393.sst
> > > -rw-r--r-- 1 java j2ee 34368461 31 mars 12:49 000450.sst
> > > -rw-r--r-- 1 java j2ee 11371247 31 mars 12:55 000467.sst
> > > -rw-r--r-- 1 java j2ee 14356435 31 mars 13:04 000489.sst
> > > -rw-r--r-- 1 java j2ee 5858737 31 mars 13:05 000494.sst
> > > -rw-r--r-- 1 java j2ee 2545952 31 mars 14:08 000659.sst
> > > -rw-r--r-- 1 java j2ee 3187275 31 mars 15:27 000868.sst
> > > -rw-r--r-- 1 java j2ee 407017 31 mars 15:34 000885.sst
> > > -rw-r--r-- 1 java j2ee 590190 31 mars 15:45 000914.sst
> > > -rw-r--r-- 1 java j2ee 154471 31 mars 15:47 000919.sst
> > > -rw-r--r-- 1 java j2ee 139838 31 mars 15:49 000924.sst
> > > -rw-r--r-- 1 java j2ee 35058 31 mars 15:49 000925.sst
> > > -rw-r--r-- 1 java j2ee 33987 31 mars 15:50 000926.sst
> > > -rw-r--r-- 1 java j2ee 16 31 mars 11:11 CURRENT
> > > -rw-r--r-- 1 java j2ee 37 31 mars 10:33 IDENTITY
> > > -rw-r--r-- 1 java j2ee 0 31 mars 10:33 LOCK
> > > -rw-r--r-- 1 java j2ee 15340 31 mars 11:11 LOG
> > > -rw-r--r-- 1 java j2ee 15046 31 mars 10:33
> LOG.old.1585643630145007
> > > -rw-r--r-- 1 java j2ee 15290 31 mars 10:33
> LOG.old.1585643826265995
> > > -rw-r--r-- 1 java j2ee 15384 31 mars 10:37
> LOG.old.1585645861692248
> > > -rw-r--r-- 1 java j2ee 60767 31 mars 15:55 MANIFEST-000197
> > > -rw-r--r-- 1 java j2ee 4857 31 mars 10:37 OPTIONS-000107
> > > -rw-r--r-- 1 java j2ee 4857 31 mars 11:11 OPTIONS-000200
> > >
> > > I can see that Kafka is running RocksDB's compaction with:
> > > public void toggleDbForBulkLoading() {
> > > try {
> > > db.compactRange(columnFamily, true, 1, 0);
> > > } catch (final RocksDBException e) {
> > > throw new ProcessorStateException("Error while range
> > > compacting during restoring store " + name, e);
> > > }
> > > }
> > >
> > > Seems related to an issue with RocksDB itself:
> > > https://github.com/facebook/rocksdb/issues/2734
> > > But i'm not sure of this.
> > > Any help would be greatly appreciated here :)
> > >
> >
> >
> > --
> > *Nicolas Carlot*
> >
> > Lead dev
> > | | nicolas.car...@chronopost.fr
> >
> >
> > *Veuillez noter qu'à partir du 20 mai, le siège Chronopost déménage. La
> > nouvelle adresse est : 3 boulevard Romain Rolland 75014 Paris*
> >
> > [image: Logo Chronopost]
> > | chronopost.fr <http://www.chronopost.fr/>
> > Suivez nous sur Facebook <https://fr-fr.facebook.com/chronopost> et
> > Twitter
> > <https://twitter.com/chronopost>.
> >
> > [image: DPD Group]
> >
>
--
*Nicolas Carlot*
Lead dev
| | nicolas.car...@chronopost.fr
*Veuillez noter qu'à partir du 20 mai, le siège Chronopost déménage. La
nouvelle adresse est : 3 boulevard Romain Rolland 75014 Paris*
[image: Logo Chronopost]
| chronopost.fr <http://www.chronopost.fr/>
Suivez nous sur Facebook <https://fr-fr.facebook.com/chronopost> et Twitter
<https://twitter.com/chronopost>.
[image: DPD Group]
