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https://issues.apache.org/jira/browse/STORM-963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648578#comment-14648578
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Jungtaek Lim commented on STORM-963:
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Could you reproduce this issue every time?
When circumstance appears again, could you dump each worker processes including
subprocess?
(Dumping worker process can be done with jstack <PID>, dumping python process
can be done with kill -SIGABRT <PID>.)
You may can't get multilang subprocess's dump since it is redirected to
ShellBolt worker's stdin.
Dump log could help us.
> Frozen topology (KafkaSpout + Multilang bolt)
> ---------------------------------------------
>
> Key: STORM-963
> URL: https://issues.apache.org/jira/browse/STORM-963
> Project: Apache Storm
> Issue Type: Bug
> Components: storm-kafka
> Affects Versions: 0.9.4, 0.9.5, 0.9.6
> Environment: - VMware ESX 5.5
> - Ubuntu Server 14.04 LTS (kernel 3.16.0-41-generic)
> - Java (TM) SE Runtime Environment (build 1.8.0_45-b14)
> - Python 2.7.6 (default, Jun 22 2015, 17:58:13)
> - Zookeeper 3.4.6
> Reporter: Alex Sobrino
> Labels: multilang
>
> Hi,
> We've got a pretty simple topology running with Storm 0.9.5 (tried also with
> 0.9.4 and 0.9.6-INCUBATING) in a 3 machine cluster:
> {code}kafkaSpout (3) -----> processBolt (12){code}
> Some info:
> - kafkaSpout reads from a topic with 3 partitions and 2 replications
> - processBolt iterates throught the message and saves the results in MongoDB
> - processBolt is implemented in Python and has a storm.log("I'm doing
> something") just to add a simple debug message in the logs
> - The messages can be quite big (~25-40 MB) and are in JSON format
> - The kafka topic has a retention of 2 hours
> - We use the same ZooKeeper cluster to both Kafka and Storm
> The topology gets frozen after several hours (not days) running. We don't see
> any message in the logs... In fact, the periodic message from s.k.KafkaUtils
> and s.k.ZkCoordinator disapears. As you can imagine, the message from the
> Bolt also dissapears. Logs are copy/pasted further on. If we redeploy the
> topology everything starts to work again until it becomes frozen again.
> Our kafkaSpout config is:
> {code}
> ZkHosts zkHosts = new ZkHosts("zkhost01:2181,zkhost02:2181,zkhost03:2181");
> SpoutConfig kafkaConfig = new SpoutConfig(zkHosts, "topic",
> "/topic/ourclientid", "ourclientid");
> kafkaConfig.scheme = new SchemeAsMultiScheme(new StringScheme());
> kafkaConfig.fetchSizeBytes = 50*1024*1024;
> kafkaConfig.bufferSizeBytes = 50*1024*1024;
> {code}
> We've also tried setting the following options
> {code}
> kafkaConfig.forceFromStart = true;
> kafkaConfig.startOffsetTime = kafka.api.OffsetRequest.EarliestTime(); // Also
> with kafka.api.OffsetRequest.LatestTime();
> kafkaConfig.useStartOffsetTimeIfOffsetOutOfRange = true;
> {code}
> Right now the topology is running without acking the messages since there's a
> bug in kafkaSpout with failed messages and deleted offsets in Kafka.
> This is what can be seen in the logs in one of the workers:
> {code}
> 2015-07-23T12:37:38.008+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:37:39.079+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:37:51.013+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:37:51.091+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:38:02.684+0200 s.k.ZkCoordinator [INFO] Task [2/3] Refreshing
> partition manager connections
> 2015-07-23T12:38:02.687+0200 s.k.DynamicBrokersReader [INFO] Read partition
> info from zookeeper: GlobalPartitionInformation{partitionMap={0=kafka1:9092,
> 1=kafka2:9092, 2=kafka3:9092}}
> 2015-07-23T12:38:02.687+0200 s.k.KafkaUtils [INFO] Task [2/3] assigned
> [Partition{host=kafka2, partition=1}]
> 2015-07-23T12:38:02.687+0200 s.k.ZkCoordinator [INFO] Task [2/3] Deleted
> partition managers: []
> 2015-07-23T12:38:02.687+0200 s.k.ZkCoordinator [INFO] Task [2/3] New
> partition managers: []
> 2015-07-23T12:38:02.687+0200 s.k.ZkCoordinator [INFO] Task [2/3] Finished
> refreshing
> 2015-07-23T12:38:09.012+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:38:41.878+0200 b.s.t.ShellBolt [INFO] ShellLog pid:28364,
> name:processBolt I'm doing something
> 2015-07-23T12:39:02.688+0200 s.k.ZkCoordinator [INFO] Task [2/3] Refreshing
> partition manager connections
> 2015-07-23T12:39:02.691+0200 s.k.DynamicBrokersReader [INFO] Read partition
> info from zookeeper: GlobalPartitionInformation{partitionMap={0=kafka1:9092,
> 1=kafka2:9092, 2=kafka3:9092}}
> 2015-07-23T12:39:02.691+0200 s.k.KafkaUtils [INFO] Task [2/3] assigned
> [Partition{host=kafka2:9092, partition=1}]
> 2015-07-23T12:39:02.691+0200 s.k.ZkCoordinator [INFO] Task [2/3] Deleted
> partition managers: []
> 2015-07-23T12:39:02.691+0200 s.k.ZkCoordinator [INFO] Task [2/3] New
> partition managers: []
> 2015-07-23T12:39:02.691+0200 s.k.ZkCoordinator [INFO] Task [2/3] Finished
> refreshing
> 2015-07-23T12:40:02.692+0200 s.k.ZkCoordinator [INFO] Task [2/3] Refreshing
> partition manager connections
> 2015-07-23T12:40:02.695+0200 s.k.DynamicBrokersReader [INFO] Read partition
> info from zookeeper: GlobalPartitionInformation{partitionMap={0=kafka1:9092,
> 1=kafka2:9092, 2=kafka3:9092}}
> 2015-07-23T12:40:02.695+0200 s.k.KafkaUtils [INFO] Task [2/3] assigned
> [Partition{host=kafka2:9092, partition=1}]
> 2015-07-23T12:40:02.695+0200 s.k.ZkCoordinator [INFO] Task [2/3] Deleted
> partition managers: []
> 2015-07-23T12:40:02.695+0200 s.k.ZkCoordinator [INFO] Task [2/3] New
> partition managers: []
> 2015-07-23T12:40:02.695+0200 s.k.ZkCoordinator [INFO] Task [2/3] Finished
> refreshing
> 2015-07-23T12:41:02.696+0200 s.k.ZkCoordinator [INFO] Task [2/3] Refreshing
> partition manager connections
> 2015-07-23T12:41:02.699+0200 s.k.DynamicBrokersReader [INFO] Read partition
> info from zookeeper: GlobalPartitionInformation{partitionMap={0=kafka1:9092,
> 1=kafka2:9092, 2=kafka3:9092}}
> 2015-07-23T12:41:02.699+0200 s.k.KafkaUtils [INFO] Task [2/3] assigned
> [Partition{host=kafka2:9092, partition=1}]
> 2015-07-23T12:41:02.699+0200 s.k.ZkCoordinator [INFO] Task [2/3] Deleted
> partition managers: []
> 2015-07-23T12:41:02.699+0200 s.k.ZkCoordinator [INFO] Task [2/3] New
> partition managers: []
> 2015-07-23T12:41:02.699+0200 s.k.ZkCoordinator [INFO] Task [2/3] Finished
> refreshing
> 2015-07-23T12:42:02.735+0200 s.k.ZkCoordinator [INFO] Task [2/3] Refreshing
> partition manager connections
> 2015-07-23T12:42:02.737+0200 s.k.DynamicBrokersReader [INFO] Read partition
> info from zookeeper: GlobalPartitionInformation{partitionMap={0=kafka1:9092,
> 1=kafka2:9092, 2=kafka3:9092}}
> 2015-07-23T12:42:02.737+0200 s.k.KafkaUtils [INFO] Task [2/3] assigned
> [Partition{host=kafka2:9092, partition=1}]
> 2015-07-23T12:42:02.737+0200 s.k.ZkCoordinator [INFO] Task [2/3] Deleted
> partition managers: []
> 2015-07-23T12:42:02.737+0200 s.k.ZkCoordinator [INFO] Task [2/3] New
> partition managers: []
> 2015-07-23T12:42:02.737+0200 s.k.ZkCoordinator [INFO] Task [2/3] Finished
> refreshing
> {code}
> and then it becomes frozen. Nothing is written into the nimbus log. We've
> checked the offsets in ZooKeeper and they're not updated:
> {code}
> {"topology":{"id":"218e58a5-6bfb-4b32-ae89-f3afa19306e1","name":"our-topology"},"offset":12047144,"partition":1,"broker":{"host":"kafka2","port":9092},"topic":"topic"}
> cZxid = 0x100028958
> ctime = Wed Jul 01 12:22:36 CEST 2015
> mZxid = 0x100518527
> mtime = Thu Jul 23 12:42:41 CEST 2015
> pZxid = 0x100028958
> cversion = 0
> dataVersion = 446913
> aclVersion = 0
> ephemeralOwner = 0x0
> dataLength = 183
> numChildren = 0
> {code}
> Any ideas of what we could be missing?
> PS: This was sent to the Storm user's mailing list and got 0 replies :\
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