RE: Cassandra 2.0.x OOM during startsup - schema version inconsistency after reboot
Hi, all, Haven't heard any responses so far, and this isue has troubled us for quite some time. Here is another update: We have noticed several times that The schema version may change after migration and reboot: Here is the scenario: 1. Two node cluster (1 & 2). 2. There are some schema changes, i.e. create a few new columnfamily. The cluster will wait until both nodes have schema version in sync (describe cluster) before moving on. 3. Right before node2 is rebooted, the schema version is consistent; however, after ndoe2 reboots and starts servicing, the MigrationManager would gossip different schema version. 4. Afterwards, both nodes starts exchanging schema message indefinitely until one of the node dies. We currently suspect the change of schema is due to replying the old entry in commit log. We wish to continue dig further, but need experts help on this. I don't know if anyone has seen this before, or if there is anything wrong with our migration flow though.. Thanks in advance. Best regards, Michael Fong From: Michael Fong [mailto:michael.f...@ruckuswireless.com] Sent: Thursday, April 21, 2016 6:41 PM To: u...@cassandra.apache.org; dev@cassandra.apache.org Subject: RE: Cassandra 2.0.x OOM during bootstrap Hi, all, Here is some more information on before the OOM happened on the rebooted node in a 2-node test cluster: 1. It seems the schema version has changed on the rebooted node after reboot, i.e. Before reboot, Node 1: DEBUG [MigrationStage:1] 2016-04-19 11:09:42,326 MigrationManager.java (line 328) Gossiping my schema version 4cb463f8-5376-3baf-8e88-a5cc6a94f58f Node 2: DEBUG [MigrationStage:1] 2016-04-19 11:09:42,122 MigrationManager.java (line 328) Gossiping my schema version 4cb463f8-5376-3baf-8e88-a5cc6a94f58f After rebooting node 2, Node 2: DEBUG [main] 2016-04-19 11:18:18,016 MigrationManager.java (line 328) Gossiping my schema version f5270873-ba1f-39c7-ab2e-a86db868b09b 2. After reboot, both nods repeatedly send MigrationTask to each other - we suspect it is related to the schema version (Digest) mismatch after Node 2 rebooted: The node2 keeps submitting the migration task over 100+ times to the other node. INFO [GossipStage:1] 2016-04-19 11:18:18,261 Gossiper.java (line 1011) Node /192.168.88.33 has restarted, now UP INFO [GossipStage:1] 2016-04-19 11:18:18,262 TokenMetadata.java (line 414) Updating topology for /192.168.88.33 INFO [GossipStage:1] 2016-04-19 11:18:18,263 StorageService.java (line 1544) Node /192.168.88.33 state jump to normal INFO [GossipStage:1] 2016-04-19 11:18:18,264 TokenMetadata.java (line 414) Updating topology for /192.168.88.33 DEBUG [GossipStage:1] 2016-04-19 11:18:18,265 MigrationManager.java (line 102) Submitting migration task for /192.168.88.33 DEBUG [GossipStage:1] 2016-04-19 11:18:18,265 MigrationManager.java (line 102) Submitting migration task for /192.168.88.33 DEBUG [MigrationStage:1] 2016-04-19 11:18:18,268 MigrationTask.java (line 62) Can't send schema pull request: node /192.168.88.33 is down. DEBUG [MigrationStage:1] 2016-04-19 11:18:18,268 MigrationTask.java (line 62) Can't send schema pull request: node /192.168.88.33 is down. DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,353 Gossiper.java (line 977) removing expire time for endpoint : /192.168.88.33 INFO [RequestResponseStage:1] 2016-04-19 11:18:18,353 Gossiper.java (line 978) InetAddress /192.168.88.33 is now UP DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,353 MigrationManager.java (line 102) Submitting migration task for /192.168.88.33 DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,355 Gossiper.java (line 977) removing expire time for endpoint : /192.168.88.33 INFO [RequestResponseStage:1] 2016-04-19 11:18:18,355 Gossiper.java (line 978) InetAddress /192.168.88.33 is now UP DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,355 MigrationManager.java (line 102) Submitting migration task for /192.168.88.33 DEBUG [RequestResponseStage:2] 2016-04-19 11:18:18,355 Gossiper.java (line 977) removing expire time for endpoint : /192.168.88.33 INFO [RequestResponseStage:2] 2016-04-19 11:18:18,355 Gossiper.java (line 978) InetAddress /192.168.88.33 is now UP DEBUG [RequestResponseStage:2] 2016-04-19 11:18:18,356 MigrationManager.java (line 102) Submitting migration task for /192.168.88.33 . On the otherhand, Node 1 keeps updating its gossip information, followed by receiving and submitting migrationTask afterwards: DEBUG [RequestResponseStage:3] 2016-04-19 11:18:18,332 Gossiper.java (line 977) removing expire time for endpoint : /192.168.88.34 INFO [RequestResponseStage:3] 2016-04-19 11:18:18,333 Gossiper.java (line 978) InetAddress /192.168.88.34 is now UP DEBUG [RequestResponseStage:4] 2016-04-19 11:18:18,335 Gossiper.java (line 977) removing expire time for endpoint : /192.168.88.34 INFO [RequestResponseStage:4] 2016-04-19 11:18:18,335 Gossiper.java (line 978) InetAddress /192.168.88.3
Re: Cassandra 2.0.x OOM during startsup - schema version inconsistency after reboot
I'd recommend you create a JIRA! That way you can get some traction on the issue. Obviously an OOM is never correct, even if your process is wrong in some way! Best, kjellman Sent from my iPhone > On May 8, 2016, at 8:48 PM, Michael Fong > wrote: > > Hi, all, > > > Haven't heard any responses so far, and this isue has troubled us for quite > some time. Here is another update: > > We have noticed several times that The schema version may change after > migration and reboot: > > Here is the scenario: > > 1. Two node cluster (1 & 2). > > 2. There are some schema changes, i.e. create a few new columnfamily. > The cluster will wait until both nodes have schema version in sync (describe > cluster) before moving on. > > 3. Right before node2 is rebooted, the schema version is consistent; > however, after ndoe2 reboots and starts servicing, the MigrationManager would > gossip different schema version. > > 4. Afterwards, both nodes starts exchanging schema message > indefinitely until one of the node dies. > > We currently suspect the change of schema is due to replying the old entry in > commit log. We wish to continue dig further, but need experts help on this. > > I don't know if anyone has seen this before, or if there is anything wrong > with our migration flow though.. > > Thanks in advance. > > Best regards, > > > Michael Fong > > From: Michael Fong [mailto:michael.f...@ruckuswireless.com] > Sent: Thursday, April 21, 2016 6:41 PM > To: u...@cassandra.apache.org; dev@cassandra.apache.org > Subject: RE: Cassandra 2.0.x OOM during bootstrap > > Hi, all, > > Here is some more information on before the OOM happened on the rebooted node > in a 2-node test cluster: > > > 1. It seems the schema version has changed on the rebooted node after > reboot, i.e. > Before reboot, > Node 1: DEBUG [MigrationStage:1] 2016-04-19 11:09:42,326 > MigrationManager.java (line 328) Gossiping my schema version > 4cb463f8-5376-3baf-8e88-a5cc6a94f58f > Node 2: DEBUG [MigrationStage:1] 2016-04-19 11:09:42,122 > MigrationManager.java (line 328) Gossiping my schema version > 4cb463f8-5376-3baf-8e88-a5cc6a94f58f > > After rebooting node 2, > Node 2: DEBUG [main] 2016-04-19 11:18:18,016 MigrationManager.java (line 328) > Gossiping my schema version f5270873-ba1f-39c7-ab2e-a86db868b09b > > > > 2. After reboot, both nods repeatedly send MigrationTask to each other > - we suspect it is related to the schema version (Digest) mismatch after Node > 2 rebooted: > The node2 keeps submitting the migration task over 100+ times to the other > node. > INFO [GossipStage:1] 2016-04-19 11:18:18,261 Gossiper.java (line 1011) Node > /192.168.88.33 has restarted, now UP > INFO [GossipStage:1] 2016-04-19 11:18:18,262 TokenMetadata.java (line 414) > Updating topology for /192.168.88.33 > INFO [GossipStage:1] 2016-04-19 11:18:18,263 StorageService.java (line 1544) > Node /192.168.88.33 state jump to normal > INFO [GossipStage:1] 2016-04-19 11:18:18,264 TokenMetadata.java (line 414) > Updating topology for /192.168.88.33 > DEBUG [GossipStage:1] 2016-04-19 11:18:18,265 MigrationManager.java (line > 102) Submitting migration task for /192.168.88.33 > DEBUG [GossipStage:1] 2016-04-19 11:18:18,265 MigrationManager.java (line > 102) Submitting migration task for /192.168.88.33 > DEBUG [MigrationStage:1] 2016-04-19 11:18:18,268 MigrationTask.java (line 62) > Can't send schema pull request: node /192.168.88.33 is down. > DEBUG [MigrationStage:1] 2016-04-19 11:18:18,268 MigrationTask.java (line 62) > Can't send schema pull request: node /192.168.88.33 is down. > DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,353 Gossiper.java (line > 977) removing expire time for endpoint : /192.168.88.33 > INFO [RequestResponseStage:1] 2016-04-19 11:18:18,353 Gossiper.java (line > 978) InetAddress /192.168.88.33 is now UP > DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,353 MigrationManager.java > (line 102) Submitting migration task for /192.168.88.33 > DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,355 Gossiper.java (line > 977) removing expire time for endpoint : /192.168.88.33 > INFO [RequestResponseStage:1] 2016-04-19 11:18:18,355 Gossiper.java (line > 978) InetAddress /192.168.88.33 is now UP > DEBUG [RequestResponseStage:1] 2016-04-19 11:18:18,355 MigrationManager.java > (line 102) Submitting migration task for /192.168.88.33 > DEBUG [RequestResponseStage:2] 2016-04-19 11:18:18,355 Gossiper.java (line > 977) removing expire time for endpoint : /192.168.88.33 > INFO [RequestResponseStage:2] 2016-04-19 11:18:18,355 Gossiper.java (line > 978) InetAddress /192.168.88.33 is now UP > DEBUG [RequestResponseStage:2] 2016-04-19 11:18:18,356 MigrationManager.java > (line 102) Submitting migration task for /192.168.88.33 > . > > > On the otherhand, Node 1 keeps updating its gossip information, followed by > receiving and submitting migrationTask afterwards: > DEBUG [R
Nodetool Cleanup Problem
Hi All, I use cassandra 3.4.When running 'nodetool cleanup' command , see this error? error: Expecting URI in variable: [cassandra.config]. Found[cassandra.yaml]. Please prefix the file with [file:///] for local files and [file:///] for remote files. If you are executing this from an external tool, it needs to set Config.setClientMode(true) to avoid loading configuration. -- StackTrace -- org.apache.cassandra.exceptions.ConfigurationException: Expecting URI in variable: [cassandra.config]. Found[cassandra.yaml]. Please prefix the file with [file:///] for local files and [file:///] for remote files. If you are executing this from an external tool, it needs to set Config.setClientMode(true) to avoid loading configuration. at org.apache.cassandra.config.YamlConfigurationLoader.getStorageConfigURL(YamlConfigurationLoader.java:78) at org.apache.cassandra.config.YamlConfigurationLoader.(YamlConfigurationLoader.java:92) at org.apache.cassandra.config.DatabaseDescriptor.loadConfig(DatabaseDescriptor.java:134) at org.apache.cassandra.config.DatabaseDescriptor.(DatabaseDescriptor.java:121) at org.apache.cassandra.config.CFMetaData$Builder.(CFMetaData.java:1160) at org.apache.cassandra.config.CFMetaData$Builder.create(CFMetaData.java:1175) at org.apache.cassandra.config.CFMetaData$Builder.create(CFMetaData.java:1170) at org.apache.cassandra.cql3.statements.CreateTableStatement.metadataBuilder(CreateTableStatement.java:118) at org.apache.cassandra.config.CFMetaData.compile(CFMetaData.java:413) at org.apache.cassandra.schema.SchemaKeyspace.compile(SchemaKeyspace.java:238) at org.apache.cassandra.schema.SchemaKeyspace.(SchemaKeyspace.java:88) at org.apache.cassandra.config.Schema.(Schema.java:96) at org.apache.cassandra.config.Schema.(Schema.java:50) at org.apache.cassandra.tools.nodetool.Cleanup.execute(Cleanup.java:45) at org.apache.cassandra.tools.NodeTool$NodeToolCmd.run(NodeTool.java:248) at org.apache.cassandra.tools.NodeTool.main(NodeTool.java:162) Can anyone help me? Best regards, Jan Ali
