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Posted to jira@kafka.apache.org by "Bruno Cadonna (Jira)" <ji...@apache.org> on 2021/03/09 09:13:00 UTC
[jira] [Closed] (KAFKA-9355) RocksDB statistics are removed from
JMX when EOS enabled and empty local state dir
[ https://issues.apache.org/jira/browse/KAFKA-9355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Bruno Cadonna closed KAFKA-9355.
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> RocksDB statistics are removed from JMX when EOS enabled and empty local state dir
> ----------------------------------------------------------------------------------
>
> Key: KAFKA-9355
> URL: https://issues.apache.org/jira/browse/KAFKA-9355
> Project: Kafka
> Issue Type: Bug
> Components: metrics, streams
> Affects Versions: 2.4.0
> Reporter: Stanislav Savulchik
> Assignee: Bruno Cadonna
> Priority: Major
> Fix For: 2.5.0
>
> Attachments: metric-removal.log
>
>
> *Steps to Reproduce*
> Set processing.guarantee = exactly_once and remove local state dir in order to force state restoration from changelog topics that have to be non empty.
> *Expected Behavior*
> There are registered MBeans like kafka.streams:type=stream-state-metrics,client-id=<application.id>-678e4b25-8fc7-4266-85a0-7a5fe52a4060-StreamThread-1,task-id=0_0,rocksdb-state-id=<state.store> for persistent RocksDB KeyValueStore-s after streams task state restoration.
> *Actual Behavior*
> There are no registered MBeans like above after streams task state restoration.
> *Details*
> I managed to inject custom MetricsReporter in order to log metricChange and metricRemoval calls. According to the logs at some point the missing metrics are removed and never restored later. Here is an excerpt for number-open-files metric:
> {noformat}
> 16:33:40.403 DEBUG c.m.r.LoggingMetricsReporter - metricChange MetricName [name=number-open-files, group=stream-state-metrics, description=Number of currently open files, tags={client-id=morpheus.conversion-678e4b25-8fc7-4266-85a0-7a5fe52a4060-StreamThread-1, task-id=0_0, rocksdb-state-id=buffered-event}]
> 16:33:40.403 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Adding metrics recorder of task 0_0 to metrics recording trigger
> 16:33:40.403 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Adding statistics for store buffered-event of task 0_0
> 16:33:40.610 INFO o.a.k.s.p.i.StoreChangelogReader - stream-thread [morpheus.conversion-678e4b25-8fc7-4266-85a0-7a5fe52a4060-StreamThread-1] No checkpoint found for task 0_0 state store buffered-event changelog morpheus.conversion-buffered-event-changelog-0 with EOS turned on. Reinitializing the task and restore its state from the beginning.
> 16:33:40.610 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Removing statistics for store buffered-event of task 0_0
> 16:33:40.610 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Removing metrics recorder for store buffered-event of task 0_0 from metrics recording trigger
> 16:33
> 16:33:40.611 DEBUG c.m.r.LoggingMetricsReporter - metricRemoval MetricName [name=number-open-files, group=stream-state-metrics, description=Number of currently open files, tags={client-id=morpheus.conversion-678e4b25-8fc7-4266-85a0-7a5fe52a4060-StreamThread-1, task-id=0_0, rocksdb-state-id=buffered-event}]
> 16:33:40.625 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Adding metrics recorder of task 0_0 to metrics recording trigger
> 16:33:40.625 DEBUG o.a.k.s.s.i.m.RocksDBMetricsRecorder - [RocksDB Metrics Recorder for buffered-event] Adding statistics for store buffered-event of task 0_0
> ...
> (no more calls to metricChange for the removed number-open-files metric){noformat}
> Also a complete log is attached [^metric-removal.log]
> Metric removal happens along this call stack:
> {noformat}
> 19:27:35.509 DEBUG c.m.r.LoggingMetricsReporter - metricRemoval MetricName [name=number-open-files, group=stream-state-metrics, description=Number of currently open files, tags={client-id=morpheus.conversion-9b76f302-7149-47de-b17b-362d642e05d5-StreamThread-1, task-id=0_0, rocksdb-state-id=buffered-event}]
> java.lang.Exception: null
> at casino.morpheus.reporter.LoggingMetricsReporter.metricRemoval(LoggingMetricsReporter.scala:24)
> at org.apache.kafka.common.metrics.Metrics.removeMetric(Metrics.java:534)
> at org.apache.kafka.common.metrics.Metrics.removeSensor(Metrics.java:448)
> at org.apache.kafka.streams.processor.internals.metrics.StreamsMetricsImpl.removeAllStoreLevelSensors(StreamsMetricsImpl.java:440)
> at org.apache.kafka.streams.state.internals.MeteredKeyValueStore.close(MeteredKeyValueStore.java:345)
> at org.apache.kafka.streams.processor.internals.StateManagerUtil.reinitializeStateStoresForPartitions(StateManagerUtil.java:93)
> at org.apache.kafka.streams.processor.internals.ProcessorStateManager.reinitializeStateStoresForPartitions(ProcessorStateManager.java:190)
> at org.apache.kafka.streams.processor.internals.AbstractTask.reinitializeStateStoresForPartitions(AbstractTask.java:215)
> at org.apache.kafka.streams.processor.internals.StoreChangelogReader.startRestoration(StoreChangelogReader.java:234)
> at org.apache.kafka.streams.processor.internals.StoreChangelogReader.initialize(StoreChangelogReader.java:185)
> at org.apache.kafka.streams.processor.internals.StoreChangelogReader.restore(StoreChangelogReader.java:81)
> at org.apache.kafka.streams.processor.internals.TaskManager.updateNewAndRestoringTasks(TaskManager.java:389)
> at org.apache.kafka.streams.processor.internals.StreamThread.runOnce(StreamThread.java:769)
> at org.apache.kafka.streams.processor.internals.StreamThread.runLoop(StreamThread.java:698)
> at org.apache.kafka.streams.processor.internals.StreamThread.run(StreamThread.java:671){noformat}
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