Hi Bernd, Does this directory contains approximately 300 files on task executor?
The 'transactionState' seems to be ok and compacted. It takes most of data size, up to 100Mb. Do you use any Flink timers? They are also kept in RocksDb and take very little, just about 300Kb. It might need more investigation but my idea is the following. The column of Flink user timers has a lot of small files with just 1-2 new records, checkpointed all the time. Most of the small file contents is just meta info. It seems to include both creation and deletion entries. As timers are always new entries, the sst files either do not overlap or too small. As result they are not merged upon compaction but just forwarded to the last level [1]. Setting dynamic compaction in SPINNING_DISK_OPTIMIZED_HIGH_MEM makes its target size what it is at any time, basically disabling compaction for it. The files can stay very long. I cannot check for all 300 files but it seems for 19/26 file removal has not happened as it does for ‘transactionState'. The RocksDb suggest to use some other TTL concept to force compaction [2]. The compaction can be also triggered manually from time to time but this is not part of standard Flink distribution. The TtlDb cleans up expired entries also only during compaction. Best, Andrey [1] https://github.com/facebook/rocksdb/blob/master/db/compaction.cc#L332 <https://github.com/facebook/rocksdb/blob/master/db/compaction.cc#L332> [2] https://github.com/facebook/rocksdb/wiki/Leveled-Compaction#ttl > On 6 Dec 2018, at 12:53, <bernd.winterst...@dev.helaba.de> > <bernd.winterst...@dev.helaba.de> wrote: > > Seems that some file deletion is disabled by default. There are some log > entries in the file > > Von: Andrey Zagrebin [mailto:and...@data-artisans.com] > Gesendet: Donnerstag, 6. Dezember 2018 12:07 > An: Winterstein, Bernd > Cc: Yun Tang; Kostas Kloudas; user; Stefan Richter; Till Rohrmann; Stephan > Ewen > Betreff: Re: number of files in checkpoint directory grows endlessly > > Hi Bernd, > > Thanks for sharing the code. > > I understand your TTL requirement. It definitely makes sense for your > application. > My recommendation is still to try running job with original backend without > TtlDb modification to narrow down the problem and understand where these > small files come from. They might look like some meta information which seems > to accumulate over time. > > Could you also investigate temporary local directories in task executors? > By default, they are usually in System.getProperty("java.io.tmpdir") (e.g. > /tmp in Linux) or there is also a config option for them [1]. > Do you see there explosion of similar files? They can be named differently. > The interesting would be whether the smaller files end with ‘.sst’ or not. > > Best, > Andrey > > [1] > https://ci.apache.org/projects/flink/flink-docs-release-1.6/ops/config.html#io-tmp-dirs > > <https://ci.apache.org/projects/flink/flink-docs-release-1.6/ops/config.html#io-tmp-dirs> > > > On 6 Dec 2018, at 09:16, <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> wrote: > > Hi Andrey > We need the TTL feature, because we store about 10 million state entries per > 24 hours. Each entry has to expire after 24 hours. We couldn’t do the expiry > with timers due to bad checkpoint performance, so I switched to TtlDB. > > It seems that per minute files are only available for the last incremental > period. After this time the files have five minute distance. > > As for the chk-* directories, there is only one directory left. > > I attached the code for the options and the KeyedStateBackend and also one of > the shared files. > > Many thanks for your help. > > > Bernd > > cat > /appdata/rtts/ice/shared/jobmanager/checkpoints/stp/a73a132912c8efaaab4a8e6331bdcf47/shared/6d64a7cc-8cdf-4f51-aa2f-bb7c8e7d4ce3 > > ¦>¦¦}d¦¦/20181205-HELADEF1TSK-TX-9ffXfg1DZCHEe2JGqpC6dDJ > > ¦¦$rocksdb.block.based.table.index.type*rocksdb.block.based.table.prefix.filtering0-rocksdb.block.based.table.whole.key.filtering1rocksdb.column.family.id#rocksdb.column.family.name_timer_state/processing_user-timersrocksdb.comparatorleveldb.BytewiseComparatorrocksdb.compressionSnappyrocksdb.creation.time¦¦¦¦rocksdb.data.sizeQrocksdb.deleted.keysrocksdb.filter.policyrocksdb.BuiltinBloomFilterrocksdb.filter.sizerocksdb.fixed.key.lengthrocksdb.format.versionrocksdb.index.sizeocksdb.merge.operands > > > > rocksdb.merge.operatorMerge By > TTLrocksdb.num.data.blocksrocksdb.num.entriesrocksdb.prefix.extractor.namenullptrocksdb.property.collectors[]rocksdb.raw.key.sizeArocksdb.raw.value.size+Y¦¦¦1Nc{¦¦¦¦*Oj¦¦¦¦¦V!filter.rocksdb.BuiltinBloomFilterQrocksdb.propertiesh¦&¦¦2? > }¦¦¦¦¦¦¦L¦¦¦JW¦¦¦$uG¦ > > > > Von: Andrey Zagrebin [mailto:and...@data-artisans.com > <mailto:and...@data-artisans.com>] > Gesendet: Mittwoch, 5. Dezember 2018 15:25 > An: Winterstein, Bernd > Cc: Yun Tang; Kostas Kloudas; user; Stefan Richter; Till Rohrmann; > step...@data-artisans.com <mailto:step...@data-artisans.com> > Betreff: Re: number of files in checkpoint directory grows endlessly > > Hi Bernd, > > Thanks for sharing the code. > > Could you try the same job without TtlDb, with original RocksDb state backend? > Even if data does not expire every day, the overall size will grow but the > number of files should not because of compaction. > > Do you set some more specific db/column options in this option factory > StpRocksDbOptions? > Could you share the source code of it and modified RocksDBKeyedStateBackend, > especially createColumnFamilyWithTtl? > > Do you always have only 1-2 last 'chk-*’ directories at a time or there are > more not cleaned up checkpoint directories? > > You have 1 minute checkpoint interval but the list of files does not have > files for some minutes consecutively. Do the files miss for some > minutes/checkpoints, like 10:10 or 10:05, or checkpoints just take long > including CheckpointMinPause? > > Could you check whether those ‘1121’ files identical? look inside or post one > of them here? > > Best, > Andrey > > > On 4 Dec 2018, at 14:10, <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> wrote: > > All calls to createColumnFamily were exchanged by createColumnFamilyWithTtl > > > > private <N, S> Tuple2<ColumnFamilyHandle, > RegisteredKeyValueStateBackendMetaInfo<N, S>> tryRegisterKvStateInformation( > StateDescriptor<?, S> stateDesc, > TypeSerializer<N> namespaceSerializer, > @Nullable StateSnapshotTransformer<S> snapshotTransformer) > throws StateMigrationException { > > Tuple2<ColumnFamilyHandle, RegisteredStateMetaInfoBase> stateInfo = > kvStateInformation.get(stateDesc.getName()); > > RegisteredKeyValueStateBackendMetaInfo<N, S> newMetaInfo; > if (stateInfo != null) { > > StateMetaInfoSnapshot restoredMetaInfoSnapshot = > restoredKvStateMetaInfos.get(stateDesc.getName()); > > Preconditions.checkState( > restoredMetaInfoSnapshot != null, > "Requested to check compatibility of a restored > RegisteredKeyedBackendStateMetaInfo," + > " but its corresponding restored snapshot cannot be > found."); > > newMetaInfo = > RegisteredKeyValueStateBackendMetaInfo.resolveKvStateCompatibility( > restoredMetaInfoSnapshot, > namespaceSerializer, > stateDesc, > snapshotTransformer); > > stateInfo.f1 = newMetaInfo; > } else { > String stateName = stateDesc.getName(); > > newMetaInfo = new RegisteredKeyValueStateBackendMetaInfo<>( > stateDesc.getType(), > stateName, > namespaceSerializer, > stateDesc.getSerializer(), > snapshotTransformer); > > ColumnFamilyHandle columnFamily = > createColumnFamilyWithTtl(stateName); > > stateInfo = Tuple2.of(columnFamily, newMetaInfo); > kvStateInformation.put(stateDesc.getName(), stateInfo); > } > > return Tuple2.of(stateInfo.f0, newMetaInfo); > } > > Von: Yun Tang [mailto:myas...@live.com <mailto:myas...@live.com>] > Gesendet: Dienstag, 4. Dezember 2018 13:55 > An: Winterstein, Bernd; and...@data-artisans.com > <mailto:and...@data-artisans.com> > Cc: k.klou...@data-artisans.com <mailto:k.klou...@data-artisans.com>; > user@flink.apache.org <mailto:user@flink.apache.org>; > s.rich...@data-artisans.com <mailto:s.rich...@data-artisans.com>; > t...@data-artisans.com <mailto:t...@data-artisans.com>; > step...@data-artisans.com <mailto:step...@data-artisans.com> > Betreff: Re: number of files in checkpoint directory grows endlessly > > Hi Bernd, > > RocksDBStateBackend would not use default column family, but put state's > entries into its newly-created column family by default. Would you please > check whether having used db.createColumnFamilyWithTtl method instead > ofdb.createColumnFamily within > RocksDBKeyedStateBackend#tryRegisterKvStateInformation? > > In my opinion, the default method of db.createColumnFamily would set ttl as > 0, which means infinity, for this column family. You could view RocksDB's > implementation here > <https://github.com/facebook/rocksdb/blob/359e48333d5aade023970d692a61434e7bf82fe8/utilities/ttl/db_ttl_impl.cc#L121>. > > Best > Yun Tang > From: bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de> <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> > Sent: Tuesday, December 4, 2018 17:40 > To: and...@data-artisans.com <mailto:and...@data-artisans.com> > Cc: k.klou...@data-artisans.com <mailto:k.klou...@data-artisans.com>; > user@flink.apache.org <mailto:user@flink.apache.org>; > s.rich...@data-artisans.com <mailto:s.rich...@data-artisans.com>; > t...@data-artisans.com <mailto:t...@data-artisans.com>; > step...@data-artisans.com <mailto:step...@data-artisans.com> > Subject: AW: number of files in checkpoint directory grows endlessly > > Sorry for the late answer. I haven’t been in the office. > > The logs show no problems. > The files that remain in the shared subfolder are almost all 1121 bytes. > Except the files from the latest checkpoint (30 files for all operators) > For each historic checkpoint six files remain (parallelism is 6) > > checkpoints/stp/2b160fc9e5eba47d1906d04f36b399bf/shared/ > > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > 046b16e5-0edc-4ca5-9757-d89aa86f5d5c > -rw-r--r--. 1 flink ice 308383 Dec 4 10:23 > dab0f801-8907-4b10-ae8b-5f5f71c28524 > -rw-r--r--. 1 flink ice 101035 Dec 4 10:23 > e4915253-7025-4e36-8671-58a371f202ff > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > 613a9fd1-4545-4785-82ef-92f8c4818bc0 > -rw-r--r--. 1 flink ice 308270 Dec 4 10:23 > 23771709-03ef-4417-acd2-1c27c8b0785e > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > 59643ae2-57b8-4d9e-9f2e-977545db9238 > -rw-r--r--. 1 flink ice 102444 Dec 4 10:23 > f9a70bb7-d4f3-4d94-af31-8e94276001b1 > -rw-r--r--. 1 flink ice 308346 Dec 4 10:23 > bafc1a20-e5a4-4b06-93fe-db00f3f3913a > -rw-r--r--. 1 flink ice 96035 Dec 4 10:23 > a8b3aa75-fa44-4fc2-ab49-437d49410acd > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > 961f1472-b61c-4c04-b544-4549c3ce4038 > -rw-r--r--. 1 flink ice 308387 Dec 4 10:23 > 7245dcfe-62e8-42a3-94a9-0698bdf9fb4d > -rw-r--r--. 1 flink ice 99209 Dec 4 10:23 > 5ad87ff2-604c-40d9-9262-76ac6369453d > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > ccaae280-837a-4bc9-95cd-3612c4cd435c > -rw-r--r--. 1 flink ice 308451 Dec 4 10:23 > 69b650dd-7969-4891-b973-9bd168e2f40e > -rw-r--r--. 1 flink ice 105638 Dec 4 10:23 > 16f3092d-76eb-4fd7-87b4-2eb28ca4696c > -rw-r--r--. 1 flink ice 11318 Dec 4 10:23 > eccb19a0-4570-4e49-be97-707248690fe8 > -rw-r--r--. 1 flink ice 308513 Dec 4 10:23 > 47259326-cb62-4abb-ad0b-5e2deda97685 > -rw-r--r--. 1 flink ice 109918 Dec 4 10:23 > aebc4390-3467-4596-a5fa-0d0a6dc74f54 > -rw-r--r--. 1 flink ice 259444946 Dec 4 10:22 > 3e97ea93-4bc9-4404-aeca-eed31e96a14b > -rw-r--r--. 1 flink ice 247501755 Dec 4 10:22 > b23d2c3a-94eb-45f0-bd29-457d8796624d > -rw-r--r--. 1 flink ice 247754788 Dec 4 10:22 > 4eb66b02-6758-4cff-9de2-fb7399b2ac0b > -rw-r--r--. 1 flink ice 247281033 Dec 4 10:22 > 2aeeb9ad-2714-481c-a7a4-04148f72671d > -rw-r--r--. 1 flink ice 247345955 Dec 4 10:22 > 5ccf700a-bd83-4e02-93a5-db46ca71e47a > -rw-r--r--. 1 flink ice 259312070 Dec 4 10:22 > 3bebe32d-0ad3-4f4e-a3aa-21719fa62c87 > -rw-r--r--. 1 flink ice 97551 Dec 4 10:22 > 5a4f8a3a-0f26-46e7-883e-d6fafd733183 > -rw-r--r--. 1 flink ice 104198 Dec 4 10:22 > cdbb4913-7dd0-4614-8b81-276a4cdf62cc > -rw-r--r--. 1 flink ice 101466 Dec 4 10:22 > ce7f0fea-8cd3-4827-9ef1-ceba569c2989 > -rw-r--r--. 1 flink ice 108561 Dec 4 10:22 > 5bd3f681-c131-4c41-9fdc-6a39b9954aa7 > -rw-r--r--. 1 flink ice 98649 Dec 4 10:22 > d5d8eb16-3bd8-4695-91a0-9d9089ca9510 > -rw-r--r--. 1 flink ice 102071 Dec 4 10:22 > f8e34ef1-60d6-4c0a-954b-64c8a0320834 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > 8fda9911-f63e-45a6-b95a-5c93fe99d0fd > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > 82545c1b-69d6-499b-a9fd-62e227b820c6 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > f9fa3bba-c92d-4dda-b16e-0ba417edf5d2 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > 844fa51d-bb74-4bec-ab15-e52d37703d24 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > 2115654a-4544-41cc-bbee-a36d0d80d8eb > -rw-r--r--. 1 flink ice 1121 Dec 4 10:21 > acfc1566-5f14-47d7-ae54-7aa1dfb3859c > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > b0144120-cce0-4b4d-9f8c-1564b9abedd9 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > 8ab4ddab-3665-4307-a581-ab413e1e2080 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > 0f8c4b1a-df5d-47f7-b960-e671cfc3c666 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > 40baf147-400e-455f-aea3-074355a77031 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > 47d2deca-1703-4dd3-9fea-e027087d553e > -rw-r--r--. 1 flink ice 1121 Dec 4 10:16 > aa336ce0-3689-4b7d-a472-b0a3ed2f5eb9 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > ee15f1e0-d23c-4add-86b4-e4ab51bb2a20 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > f440b5cf-8f62-4532-a886-a2cedc9a043e > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > de423c46-4288-464b-97cb-6f7764b88dfd > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > 273a15cb-8c9f-4412-b5d2-68397ba461c9 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > bb38b011-070d-4c21-b04a-4e923f85de86 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:11 > 969abc07-d313-4d79-8119-6e1f3886be48 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > eb0b2591-653c-47bd-a6b2-9f6634ff4f0a > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > 20b7e49a-ace5-4ef7-987f-0d328f47c56f > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > a25c2bd9-7fe9-4558-b9dd-30b525a0b435 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > dcd0852f-58dc-467e-93db-5700cd4f606e > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > 400e5038-2913-4aea-932d-92f508bd38f7 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:06 > 10ce727b-9389-4911-b0d4-1b342dd3232c > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > daec0dcb-384a-4d86-a423-7e2b0482b70e > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > c787d58a-4bd5-4d9a-a4d8-47d9618552ff > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > b2c1383a-8452-4ec6-9064-a5e8f56e6f21 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > 65c0c908-b604-4ac9-a72f-4bb87676df11 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > 42d59072-95ec-42d5-81ff-b9447cb39fd0 > -rw-r--r--. 1 flink ice 1121 Dec 4 10:01 > b40c2577-e604-482d-86a1-ddb785e3b799 > > The ttldb stream backend is mostly a copy of the current > flink-statebackend-rocksb which uses the TtlDB instead of the RockDB class > with the following configuration: > > > protected void buildDefaultStateBackend(StreamExecutionEnvironment > executionEnvironment) throws IOException { > FsStateBackend fsStateBackend = new > FsStateBackend(configuration.getCheckpointDirectory(), true); > RocksDBStateBackend rocksDBStateBackend = new > de.helaba.rtts.ice.rocksdb.ttl.RocksDBStateBackend(fsStateBackend, > TernaryBoolean.TRUE, configuration.getStateTimeToLive()); > > rocksDBStateBackend.setPredefinedOptions(PredefinedOptions.SPINNING_DISK_OPTIMIZED_HIGH_MEM); > rocksDBStateBackend.setOptions(new StpRocksDbOptions()); > executionEnvironment.setStateBackend(rocksDBStateBackend); > } > > protected void configureCheckpointing(StreamExecutionEnvironment > executionEnvironment) { > CheckpointConfig checkpointConfig = > executionEnvironment.getCheckpointConfig(); > > checkpointConfig.setCheckpointInterval(configuration.getCheckpointInterval()); > > checkpointConfig.setMinPauseBetweenCheckpoints(configuration.getCheckpointMinPause()); > > checkpointConfig.enableExternalizedCheckpoints(CheckpointConfig.ExternalizedCheckpointCleanup.DELETE_ON_CANCELLATION); > checkpointConfig.setCheckpointingMode(CheckpointingMode.EXACTLY_ONCE); > executionEnvironment.getConfig().setUseSnapshotCompression(true); > } > > > > Von: Andrey Zagrebin [mailto:and...@data-artisans.com > <mailto:and...@data-artisans.com>] > Gesendet: Donnerstag, 29. November 2018 15:38 > An: Winterstein, Bernd > Cc: Kostas Kloudas; user; Stefan Richter; Till Rohrmann; Stephan Ewen > Betreff: Re: number of files in checkpoint directory grows endlessly > > Could you share the logs to check possible failures to subsume or remove > previous checkpoints? > What is the sizes of the files? It can help to understand how compaction goes. > Could you also provide more details how you setup TtlDb with Flink? > > Best, > Andrey > > > On 29 Nov 2018, at 11:34, Andrey Zagrebin <and...@data-artisans.com > <mailto:and...@data-artisans.com>> wrote: > > Compaction merges SST files in background using native threads. While merging > it filters out removed and expired data. In general, the idea is that there > are enough resources for compaction to keep up with the DB update rate and > reduce storage. It can be quite IO intensive. Compaction has a lot of tuning > knobs and statistics to monitor the process [1] which are usually out of the > scope of Flink depending on state access pattern of the application. You can > create and set RocksDBStateBackend for you application in Flink and configure > it with custom RocksDb/column specific options. > > [1] https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide > <https://github.com/facebook/rocksdb/wiki/RocksDB-Tuning-Guide> > [2] https://github.com/facebook/rocksdb/wiki/Compaction > <https://github.com/facebook/rocksdb/wiki/Compaction> > > > On 29 Nov 2018, at 11:20, <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> wrote: > > We use TtlDB because the state contents should expire automatically after 24 > hours. Therefore we only changed the state backend to use TtlDb instead of > RocksDB with a fixed retention time. > > We have a slow IO because we only have SAN volumes available. Can you further > clarify the problem with slow compaction. > > Regards, > > Bernd > > > -----Ursprüngliche Nachricht----- > Von: Andrey Zagrebin [mailto:and...@data-artisans.com > <mailto:and...@data-artisans.com>] > Gesendet: Donnerstag, 29. November 2018 11:01 > An: Winterstein, Bernd > Cc: Kostas Kloudas; user; s.rich...@data-artisans.com > <mailto:s.rich...@data-artisans.com>; t...@data-artisans.com > <mailto:t...@data-artisans.com>; step...@data-artisans.com > <mailto:step...@data-artisans.com> > Betreff: Re: number of files in checkpoint directory grows endlessly > > If you use incremental checkpoints, state backend stores raw RocksDB SST > files which represent all state data. Each checkpoint adds SST files with new > updates which are not present in previous checkpoint, basically their > difference. > > One of the following could be happening: > - old keys are not explicitly deleted or expire (depending on how TtlDb is > used) > - compaction is too slow to drop older SST files for the latest checkpoint so > that they can be deleted with the previous checkpoints > > > > On 29 Nov 2018, at 10:48, <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> <bernd.winterst...@dev.helaba.de > <mailto:bernd.winterst...@dev.helaba.de>> wrote: > > Hi > We use Flink 1..6.2. As for the checkpoint directory there is only one > chk-xxx directory. Therefore if would expect only one checkpoint remains. > The value of 'state.checkpoints.num-retained’ is not set explicitly. > > The problem is not the number of checkpoints but the number of files in the > "shared" directory next to the chk-xxx directory. > > > -----Ursprüngliche Nachricht----- > Von: Andrey Zagrebin [mailto:and...@data-artisans.com > <mailto:and...@data-artisans.com>] > Gesendet: Donnerstag, 29. November 2018 10:39 > An: Kostas Kloudas > Cc: Winterstein, Bernd; user; Stefan Richter; Till Rohrmann; Stephan > Ewen > Betreff: Re: number of files in checkpoint directory grows endlessly > > Hi Bernd, > > Did you change 'state.checkpoints.num-retained’ in flink-conf.yaml? By > default, only one checkpoint should be retained. > > Which version of Flink do you use? > Can you check Job Master logs whether you see there warning like this: > `Fail to subsume the old checkpoint`? > > Best, > Andrey > > > > On 29 Nov 2018, at 10:18, Kostas Kloudas <k.klou...@data-artisans.com > <mailto:k.klou...@data-artisans.com>> wrote: > > Hi Bernd, > > I think the Till, Stefan or Stephan (cc'ed) are the best to answer your > question. > > Cheers, > Kostas > > ________________________________ > > > Landesbank Hessen-Thueringen Girozentrale Anstalt des oeffentlichen > Rechts > Sitz: Frankfurt am Main / Erfurt > Amtsgericht Frankfurt am Main, HRA 29821 / Amtsgericht Jena, HRA > 102181 > > Bitte nutzen Sie die E-Mail-Verbindung mit uns ausschliesslich zum > Informationsaustausch. Wir koennen auf diesem Wege keine > rechtsgeschaeftlichen Erklaerungen (Auftraege etc.) entgegennehmen. > > Der Inhalt dieser Nachricht ist vertraulich und nur fuer den angegebenen > Empfaenger bestimmt. Jede Form der Kenntnisnahme oder Weitergabe durch Dritte > ist unzulaessig. Sollte diese Nachricht nicht fur Sie bestimmt sein, so > bitten wir Sie, sich mit uns per E-Mail oder telefonisch in Verbindung zu > setzen. > > Please use your E-mail connection with us exclusively for the exchange of > information. We do not accept legally binding declarations (orders, etc.) by > this means of communication. > > The contents of this message is confidential and intended only for the > recipient indicated. Taking notice of this message or disclosure by third > parties is not permitted. In the event that this message is not intended for > you, please contact us via E-mail or phone. > > ________________________________ > > > Landesbank Hessen-Thueringen Girozentrale > Anstalt des oeffentlichen Rechts > Sitz: Frankfurt am Main / Erfurt > Amtsgericht Frankfurt am Main, HRA 29821 / Amtsgericht Jena, HRA 102181 > > Bitte nutzen Sie die E-Mail-Verbindung mit uns ausschliesslich zum > Informationsaustausch. Wir koennen auf diesem Wege keine > rechtsgeschaeftlichen Erklaerungen (Auftraege etc.) entgegennehmen. > > Der Inhalt dieser Nachricht ist vertraulich und nur fuer den angegebenen > Empfaenger bestimmt. Jede Form der Kenntnisnahme oder Weitergabe durch Dritte > ist unzulaessig. Sollte diese Nachricht nicht fur Sie bestimmt sein, so > bitten wir Sie, sich mit uns per E-Mail oder telefonisch in Verbindung zu > setzen. > > Please use your E-mail connection with us exclusively for the exchange of > information. We do not accept legally binding declarations (orders, etc.) by > this means of communication. > > The contents of this message is confidential and intended only for the > recipient indicated. Taking notice of this message or disclosure by third > parties is not > permitted. In the event that this message is not intended for you, please > contact us via E-mail or phone. > > <StpRocksDbOptions.java><RocksDBKeyedStateBackend.java><shared_file.bin.txt>
