[jira] [Created] (SAMZA-2363) Rock DB failed to create hard link on Azure file

["Weiqing Yang (Jira)" <ji...@apache.org>]

Weiqing Yang created SAMZA-2363:
-----------------------------------

             Summary: Rock DB failed to create hard link on Azure file
                 Key: SAMZA-2363
                 URL: https://issues.apache.org/jira/browse/SAMZA-2363
             Project: Samza
          Issue Type: Bug
          Components: kv, kv-store
            Reporter: Weiqing Yang


I was tried to test the implementation ([https://github.com/apache/samza/pull/1197]) of Samza on K8s on AKS (using the latest Samza (master branch)), and got the error below. The job was trying to store logs and the state in Azure file.

(P.S. the implementation works fine with Samza 1.1.)
{code:java}
2019-11-04 00:56:00.558 [main] SamzaContainer [INFO] Entering run loop.
2019-11-04 00:56:00.559 [main] ClusterBasedProcessorLifecycleListener [INFO] Container Started
2019-11-04 00:56:57.106 [kafka-producer-network-thread | kafka_producer-wikipedia_application-1] Metadata [INFO] Cluster ID: YNWIzBLFSa2Lg5wehzo7ZA
2019-11-04 00:57:03.920 [main] KafkaSystemAdmin [INFO] Fetching SSP metadata for: [SystemStreamPartition [kafka, wikipedia-stats-changelog, 7]]
2019-11-04 00:57:03.923 [main] KafkaSystemAdmin [INFO] Fetching SSP metadata for: [SystemStreamPartition [kafka, wikipedia-application-1-window-statsWindow, 7]]
2019-11-04 00:57:04.222 [main] RunLoop [ERROR] Task Partition 7 commit failed
org.rocksdb.RocksDBException: while link file to /tmp/log/wikipedia-application-1/wikipedia-stats/Partition_7-1572829023927.tmp/000013.sst: /tmp/log/wikipedia-application-1/wikipedia-stats/Partition_7/000013.sst: Operation not supported
	at org.rocksdb.Checkpoint.createCheckpoint(Native Method)
	at org.rocksdb.Checkpoint.createCheckpoint(Checkpoint.java:51)
	at org.apache.samza.storage.kv.RocksDbKeyValueStore.checkpoint(RocksDbKeyValueStore.scala:245)
	at org.apache.samza.storage.kv.LoggedStore.checkpoint(LoggedStore.scala:125)
	at org.apache.samza.storage.kv.SerializedKeyValueStore.checkpoint(SerializedKeyValueStore.scala:170)
	at org.apache.samza.storage.kv.CachedStore.checkpoint(CachedStore.scala:297)
	at org.apache.samza.storage.kv.NullSafeKeyValueStore.checkpoint(NullSafeKeyValueStore.scala:103)
	at org.apache.samza.storage.kv.KeyValueStorageEngine$$anonfun$checkpoint$1.apply(KeyValueStorageEngine.scala:215)
	at org.apache.samza.storage.kv.KeyValueStorageEngine$$anonfun$checkpoint$1.apply(KeyValueStorageEngine.scala:212)
	at org.apache.samza.util.TimerUtil$class.updateTimer(TimerUtil.scala:37)
	at org.apache.samza.storage.kv.KeyValueStorageEngine.updateTimer(KeyValueStorageEngine.scala:37)
	at org.apache.samza.storage.kv.KeyValueStorageEngine.checkpoint(KeyValueStorageEngine.scala:212)
	at org.apache.samza.storage.TransactionalStateTaskStorageManager$$anonfun$2.apply(TransactionalStateTaskStorageManager.scala:67)
	at org.apache.samza.storage.TransactionalStateTaskStorageManager$$anonfun$2.apply(TransactionalStateTaskStorageManager.scala:66)
	at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
	at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
	at scala.collection.Iterator$class.foreach(Iterator.scala:893)
	at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)
	at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
	at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
	at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
	at scala.collection.AbstractTraversable.flatMap(Traversable.scala:104)
	at org.apache.samza.storage.TransactionalStateTaskStorageManager.checkpoint(TransactionalStateTaskStorageManager.scala:66)
	at org.apache.samza.container.TaskInstance.commit(TaskInstance.scala:267)
	at org.apache.samza.container.RunLoop$AsyncTaskWorker$5.run(RunLoop.java:547)
	at org.apache.samza.container.RunLoop$AsyncTaskWorker.commit(RunLoop.java:566)
	at org.apache.samza.container.RunLoop$AsyncTaskWorker.run(RunLoop.java:432)
	at org.apache.samza.container.RunLoop$AsyncTaskWorker.access$300(RunLoop.java:357)
	at org.apache.samza.container.RunLoop.runTasks(RunLoop.java:244)
	at org.apache.samza.container.RunLoop.run(RunLoop.java:176)
	at org.apache.samza.container.SamzaContainer.run(SamzaContainer.scala:768)
	at org.apache.samza.runtime.ContainerLaunchUtil.run(ContainerLaunchUtil.java:139)
	at org.apache.samza.runtime.ContainerLaunchUtil.run(ContainerLaunchUtil.java:82)
	at org.apache.samza.runtime.LocalContainerRunner.main(LocalContainerRunner.java:80)
2019-11-04 00:57:04.223 [main] RunLoop [ERROR] Caught throwable and stopping run loop
org.rocksdb.RocksDBException: while link file to /tmp/log/wikipedia-application-1/wikipedia-stats/Partition_7-1572829023927.tmp/000013.sst: /tmp/log/wikipedia-application-1/wikipedia-stats/Partition_7/000013.sst: Operation not supported
	at org.rocksdb.Checkpoint.createCheckpoint(Native Method)
{code}



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