Hi Jeff,
    Today another node was shutdown,I have attached the exception log 
file,could you please help to analyze?Thanks.

Best Regards,

倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811|Tel: + 86 27 5024 2516

发件人: Jeff Jirsa <jji...@gmail.com>
发送时间: 2018年3月27日 11:50
收件人: Xiangfei Ni <xiangfei...@cm-dt.com>
抄送: user@cassandra.apache.org
主题: Re: 答复: A node down every day in a 6 nodes cluster

Only one node having the problem is suspicious. May be that your application is 
improperly pooling connections, or you have a hardware problem.

I dont see anything in nodetool that explains it, though you certainly have a 
data model likely to cause problems over time (the cardinality of

rt_ac_stat.idx_rt_ac_stat_prot_verrt_ac_stat.idx_rt_ac_stat_prot_ver is such 
that you have very wide partitions and it'll be difficult to read).





On Mon, Mar 26, 2018 at 8:26 PM, Xiangfei Ni 
<xiangfei...@cm-dt.com<mailto:xiangfei...@cm-dt.com>> wrote:
Hi Jeff,
    I need to restart the node manually every time,only one node has this 
problem.
    I have attached the nodetool output,thanks.

Best Regards,

倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811<tel:+86%20137%209700%207811>|Tel: + 86 27 5024 
2516<tel:+86%2027%205024%202516>

发件人: Jeff Jirsa <jji...@gmail.com<mailto:jji...@gmail.com>>
发送时间: 2018年3月27日 11:03
收件人: user@cassandra.apache.org<mailto:user@cassandra.apache.org>
主题: Re: A node down every day in a 6 nodes cluster

That warning isn’t sufficient to understand why the node is going down


Cassandra 3.9 has some pretty serious known issues - upgrading to 3.11.3 is 
likely a good idea

Are the nodes coming up on their own? Or are you restarting them?

Paste the output of nodetool tpstats and nodetool cfstats



--
Jeff Jirsa


On Mar 26, 2018, at 7:56 PM, Xiangfei Ni 
<xiangfei...@cm-dt.com<mailto:xiangfei...@cm-dt.com>> wrote:
Hi Cassandra experts,
  I am facing an issue,a node downs every day in a 6 nodes cluster,the cluster 
is just in one DC,
  Every node has 4C 16G,and the heap configuration is MAX_HEAP_SIZE=8192m 
HEAP_NEWSIZE=512m,every node load about 200G data,the RF for the business CF is 
3,a node downs one time every day,the system.log shows below info:
WARN  [Native-Transport-Requests-19] 2018-03-26 18:53:17,128 
CassandraAuthorizer.java:101 - CassandraAuthorizer failed to authorize #<User 
nev_tsp_sa> for <table nev_prod_tsp.latest_rt_alarm>
ERROR [Native-Transport-Requests-19] 2018-03-26 18:53:17,129 
QueryMessage.java:128 - Unexpected error during query
com.google.common.util.concurrent.UncheckedExecutionException: 
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2203) 
~[guava-18.0.jar:na]
        at com.google.common.cache.LocalCache.get(LocalCache.java:3937) 
~[guava-18.0.jar:na]
        at com.google.common.cache.LocalCache.getOrLoad(LocalCache.java:3941) 
~[guava-18.0.jar:na]
        at 
com.google.common.cache.LocalCache$LocalLoadingCache.get(LocalCache.java:4824) 
~[guava-18.0.jar:na]
        at org.apache.cassandra.auth.AuthCache.get(AuthCache.java:108) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.PermissionsCache.getPermissions(PermissionsCache.java:45)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.AuthenticatedUser.getPermissions(AuthenticatedUser.java:104)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.ClientState.authorize(ClientState.java:419) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.ClientState.checkPermissionOnResourceChain(ClientState.java:352)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.ClientState.ensureHasPermission(ClientState.java:329)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.ClientState.hasAccess(ClientState.java:316) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.ClientState.hasColumnFamilyAccess(ClientState.java:300)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.ModificationStatement.checkAccess(ModificationStatement.java:211)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:185)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:219) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:204) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.messages.QueryMessage.execute(QueryMessage.java:115)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513)
 [apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407)
 [apache-cassandra-3.9.jar:3.9]
        at 
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:357)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_91]
        at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 [apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) 
[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at 
org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:102)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.PermissionsCache.lambda$new$0(PermissionsCache.java:37)
 ~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.auth.AuthCache$1.load(AuthCache.java:183) 
~[apache-cassandra-3.9.jar:3.9]
        at 
com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3527)
 ~[guava-18.0.jar:na]
        at 
com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2319) 
~[guava-18.0.jar:na]
        at 
com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2282)
 ~[guava-18.0.jar:na]
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2197) 
~[guava-18.0.jar:na]
        ... 26 common frames omitted
Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation 
timed out - received only 0 responses.
        at 
org.apache.cassandra.service.ReadCallback.awaitResults(ReadCallback.java:132) 
~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:137) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.AbstractReadExecutor.get(AbstractReadExecutor.java:145)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy$SinglePartitionReadLifecycle.awaitResultsAndRetryOnDigestMismatch(StorageProxy.java:1718)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1667) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.readRegular(StorageProxy.java:1608) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1527) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.db.SinglePartitionReadCommand$Group.execute(SinglePartitionReadCommand.java:975)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:271)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:232)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraAuthorizer.addPermissionsForRole(CassandraAuthorizer.java:227)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraAuthorizer.authorize(CassandraAuthorizer.java:93)
 ~[apache-cassandra-3.9.jar:3.9]
        ... 32 common frames omitted
WARN  [Native-Transport-Requests-23] 2018-03-26 18:53:17,131 
CassandraAuthorizer.java:101 - CassandraAuthorizer failed to authorize #<User 
nev_tsp_sa> for <table nev_prod_tsp.rt_alarm_unite>
ERROR [Native-Transport-Requests-64] 2018-03-26 18:53:17,135 
QueryMessage.java:128 - Unexpected error during query
com.google.common.util.concurrent.UncheckedExecutionException: 
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2203) 
~[guava-18.0.jar:na]

I have confirmed that nev_tsp_sa has all rights on nev_prod_tsp keyspace:
cassandra@cqlsh:system_auth> select * from role_permissions where role = 
'nev_tsp_sa';

role       | resource          | permissions
------------+-------------------+--------------------------------------------------------------
nev_tsp_sa | data/nev_prod_tsp | {'ALTER', 'AUTHORIZE', 'CREATE', 'DROP', 
'MODIFY', 'SELECT'}

the cache disk can be read/write as normal.

Highly appreciated if anyone can help,thanks very much !


Best Regards,

倪项菲/ David Ni
中移德电网络科技有限公司
Virtue Intelligent Network Ltd, co.
Add: 2003,20F No.35 Luojia creative city,Luoyu Road,Wuhan,HuBei
Mob: +86 13797007811<tel:+86%20137%209700%207811>|Tel: + 86 27 5024 
2516<tel:+86%2027%205024%202516>


ERROR [Native-Transport-Requests-34] 2018-03-28 00:39:25,049 Message.java:617 - 
Unexpected exception during request; channel = [id: 0xcb106799, 
L:/10.21.20.24:9042 ! R:/10.21.20.72:60796]
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:489)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.canLogin(CassandraRoleManager.java:298)
 ~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ClientState.login(ClientState.java:271) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.messages.AuthResponse.execute(AuthResponse.java:79)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513)
 [apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407)
 [apache-cassandra-3.9.jar:3.9]
        at 
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:357)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_91]
        at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 [apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) 
[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation 
timed out - received only 0 responses.
        at 
org.apache.cassandra.service.ReadCallback.awaitResults(ReadCallback.java:132) 
~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:137) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.AbstractReadExecutor.get(AbstractReadExecutor.java:145)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy$SinglePartitionReadLifecycle.awaitResultsAndRetryOnDigestMismatch(StorageProxy.java:1718)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1667) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.readRegular(StorageProxy.java:1608) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1527) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.db.SinglePartitionReadCommand$Group.execute(SinglePartitionReadCommand.java:975)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:271)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:232)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRoleFromTable(CassandraRoleManager.java:497)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:485)
 ~[apache-cassandra-3.9.jar:3.9]
        ... 13 common frames omitted
INFO  [Service Thread] 2018-03-28 00:39:25,049 StatusLogger.java:106 - 
system_traces.events                      0,0
WARN  [GossipTasks:1] 2018-03-28 00:39:25,051 Gossiper.java:771 - Gossip stage 
has 2392 pending tasks; skipping status check (no nodes will be marked down)
INFO  [Service Thread] 2018-03-28 00:39:25,058 GCInspector.java:284 - 
ConcurrentMarkSweep GC in 310079ms.  Par Survivor Space: 53673520 -> 49496248
INFO  [Service Thread] 2018-03-28 00:40:01,918 StatusLogger.java:52 - Pool Name 
                   Active   Pending      Completed   Blocked  All Time Blocked
WARN  [GossipTasks:1] 2018-03-28 00:40:25,397 Gossiper.java:771 - Gossip stage 
has 2474 pending tasks; skipping status check (no nodes will be marked down)
WARN  [GossipTasks:1] 2018-03-28 00:48:00,332 Gossiper.java:771 - Gossip stage 
has 3028 pending tasks; skipping status check (no nodes will be marked down)
INFO  [Service Thread] 2018-03-28 00:48:00,337 StatusLogger.java:106 - 
system_traces.events                      0,0
INFO  [Service Thread] 2018-03-28 00:48:26,414 GCInspector.java:284 - 
ConcurrentMarkSweep GC in 541035ms.  CMS Old Gen: 8053063648 -> 8053063680; Par 
Eden Space: 429522944 -> 429522936; Par Survivor Space: 53673912 -> 49507016
INFO  [Service Thread] 2018-03-28 00:48:26,414 StatusLogger.java:52 - Pool Name 
                   Active   Pending      Completed   Blocked  All Time Blocked
ERROR [STREAM-OUT-/10.21.20.28:36986] 2018-03-28 01:28:08,895 
CassandraDaemon.java:226 - Exception in thread 
Thread[STREAM-OUT-/10.21.20.28:36986,5,main]
java.lang.OutOfMemoryError: Java heap space
        at 
ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:440) 
~[logback-classic-1.1.3.jar:na]
        at 
ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:396) 
~[logback-classic-1.1.3.jar:na]
        at ch.qos.logback.classic.Logger.error(Logger.java:555) 
~[logback-classic-1.1.3.jar:na]
        at 
org.apache.cassandra.streaming.StreamSession.onError(StreamSession.java:533) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.run(ConnectionHandler.java:377)
 ~[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_91]
INFO  [ScheduledTasks:1] 2018-03-28 02:14:20,234 MessagingService.java:1048 - 
READ messages were dropped in last 5000 ms: 1 for internal timeout and 0 for 
cross node timeout. Mean internal dropped latency: 0 ms and Mean cross-node 
dropped latency: 0 ms
ERROR [STREAM-OUT-/10.21.20.28:4282] 2018-03-28 02:15:32,398 
StreamSession.java:533 - [Stream #4dfbbd80-31b7-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.26] 2018-03-28 02:40:14,326 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.26,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:12062] 2018-03-28 02:40:57,686 
StreamSession.java:533 - [Stream #4e7caa20-31b3-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
INFO  [Service Thread] 2018-03-28 02:41:25,516 StatusLogger.java:56 - 
MutationStage                    32    719673       18032055         0          
       0

ERROR [STREAM-OUT-/10.21.20.28:7878] 2018-03-28 02:51:08,862 
StreamSession.java:533 - [Stream #04f62810-31b6-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:7066] 2018-03-28 02:42:04,812 
StreamSession.java:533 - [Stream #364b7090-31b7-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.26] 2018-03-28 03:25:51,435 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.26,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.25] 2018-03-28 03:34:26,579 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.25,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:8733] 2018-03-28 03:36:32,059 
StreamSession.java:533 - [Stream #d32ebcd0-31b4-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.25:30439] 2018-03-28 02:45:02,591 
StreamSession.java:533 - [Stream #e3d69890-31ba-11e8-b768-f997b824a5a9] 
Streaming error occurred on session with peer 10.21.20.25
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:48176] 2018-03-28 03:50:45,386 
StreamSession.java:533 - [Stream #f1fe0c00-31b5-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:40626] 2018-03-28 03:55:54,316 
StreamSession.java:533 - [Stream #e2a12a00-31b3-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.25:28491] 2018-03-28 03:56:22,664 
StreamSession.java:533 - [Stream #cbb931f0-31ba-11e8-b768-f997b824a5a9] 
Streaming error occurred on session with peer 10.21.20.25
java.lang.OutOfMemoryError: Java heap space
ERROR [InternalResponseStage:226] 2018-03-28 03:56:22,664 
CassandraDaemon.java:226 - Exception in thread 
Thread[InternalResponseStage:226,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 03:56:46,768 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.27,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 03:59:52,351 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.27,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.28] 2018-03-28 04:03:25,703 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.28,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [PERIODIC-COMMIT-LOG-SYNCER] 2018-03-28 04:14:29,566 
CassandraDaemon.java:226 - Exception in thread 
Thread[PERIODIC-COMMIT-LOG-SYNCER,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [GossipTasks:1] 2018-03-28 04:14:53,963 CassandraDaemon.java:226 - 
Exception in thread Thread[GossipTasks:1,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [Native-Transport-Requests-72] 2018-03-28 04:15:56,836 Message.java:617 - 
Unexpected exception during request; channel = [id: 0x59942749, 
L:/10.21.20.24:9042 - R:/10.21.20.45:31617]
java.lang.OutOfMemoryError: Java heap space
WARN  [epollEventLoopGroup-2-1] 2018-03-28 04:19:36,951 Slf4JLogger.java:146 - 
An exception 'java.lang.OutOfMemoryError: Java heap space' [enable DEBUG level 
for full stacktrace] was thrown by a user handler's exceptionCaught() method 
while handling the following exception:
java.lang.OutOfMemoryError: Java heap space
ERROR [Native-Transport-Requests-39] 2018-03-28 04:38:30,582 Message.java:617 - 
Unexpected exception during request; channel = [id: 0x7050a76f, 
L:/10.21.20.24:9042 ! R:/10.21.20.71:42213]
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:489)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.canLogin(CassandraRoleManager.java:298)
 ~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ClientState.login(ClientState.java:271) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.messages.AuthResponse.execute(AuthResponse.java:79)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513)
 [apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407)
 [apache-cassandra-3.9.jar:3.9]
        at 
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:357)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_91]
        at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 [apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) 
[apache-cassandra-3.9.jar:3.9]
ERROR [STREAM-OUT-/10.21.20.28:48176] 2018-03-28 03:50:45,386 
StreamSession.java:533 - [Stream #f1fe0c00-31b5-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:40626] 2018-03-28 03:55:54,316 
StreamSession.java:533 - [Stream #e2a12a00-31b3-11e8-8fc5-39c988b353c2] 
Streaming error occurred on session with peer 10.21.20.28
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.25:28491] 2018-03-28 03:56:22,664 
StreamSession.java:533 - [Stream #cbb931f0-31ba-11e8-b768-f997b824a5a9] 
Streaming error occurred on session with peer 10.21.20.25
java.lang.OutOfMemoryError: Java heap space
ERROR [InternalResponseStage:226] 2018-03-28 03:56:22,664 
CassandraDaemon.java:226 - Exception in thread 
Thread[InternalResponseStage:226,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 03:56:46,768 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.27,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 03:59:52,351 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.27,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.28] 2018-03-28 04:03:25,703 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.28,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [PERIODIC-COMMIT-LOG-SYNCER] 2018-03-28 04:14:29,566 
CassandraDaemon.java:226 - Exception in thread 
Thread[PERIODIC-COMMIT-LOG-SYNCER,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [GossipTasks:1] 2018-03-28 04:14:53,963 CassandraDaemon.java:226 - 
Exception in thread Thread[GossipTasks:1,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [Native-Transport-Requests-72] 2018-03-28 04:15:56,836 Message.java:617 - 
Unexpected exception during request; channel = [id: 0x59942749, 
L:/10.21.20.24:9042 - R:/10.21.20.45:31617]
java.lang.OutOfMemoryError: Java heap space
WARN  [epollEventLoopGroup-2-1] 2018-03-28 04:19:36,951 Slf4JLogger.java:146 - 
An exception 'java.lang.OutOfMemoryError: Java heap space' [enable DEBUG level 
for full stacktrace] was thrown by 
a user handler's exceptionCaught() method while handling the following 
exception:
java.lang.OutOfMemoryError: Java heap space
ERROR [Native-Transport-Requests-39] 2018-03-28 04:38:30,582 Message.java:617 - 
Unexpected exception during request; channel = [id: 0x7050a76f, 
L:/10.21.20.24:9042 ! R:/10.21.20.71:42213]
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:489)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.canLogin(CassandraRoleManager.java:298)
 ~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ClientState.login(ClientState.java:271) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.messages.AuthResponse.execute(AuthResponse.java:79)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513)
 [apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407)
 [apache-cassandra-3.9.jar:3.9]
        at 
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:357)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_91]
        at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 [apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) 
[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation 
timed out - received only 0 responses.
        at 
org.apache.cassandra.service.ReadCallback.awaitResults(ReadCallback.java:132) 
~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:137) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.AbstractReadExecutor.get(AbstractReadExecutor.java:145)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy$SinglePartitionReadLifecycle.awaitResultsAndRetryOnDigestMismatch(StorageProxy.java:1718)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1667) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.readRegular(StorageProxy.java:1608) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1527) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.db.SinglePartitionReadCommand$Group.execute(SinglePartitionReadCommand.java:975)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:271)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:232)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRoleFromTable(CassandraRoleManager.java:497)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:485)
 ~[apache-cassandra-3.9.jar:3.9]
        ... 13 common frames omitted
ERROR [Native-Transport-Requests-1] 2018-03-28 04:46:18,782 Message.java:617 - 
Unexpected exception during request; channel = [id: 0xe29dd66d, 
L:/10.21.20.24:9042 ! R:/10.21.20.71:42398]
java.lang.RuntimeException: 
org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out - 
received only 0 responses.
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:489)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.canLogin(CassandraRoleManager.java:298)
 ~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ClientState.login(ClientState.java:271) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.messages.AuthResponse.execute(AuthResponse.java:79)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:513)
 [apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.transport.Message$Dispatcher.channelRead0(Message.java:407)
 [apache-cassandra-3.9.jar:3.9]
        at 
io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:366)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:35)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:357)
 [netty-all-4.0.39.Final.jar:4.0.39.Final]
        at 
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
[na:1.8.0_91]
        at 
org.apache.cassandra.concurrent.AbstractLocalAwareExecutorService$FutureTask.run(AbstractLocalAwareExecutorService.java:164)
 [apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.concurrent.SEPWorker.run(SEPWorker.java:109) 
[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
Caused by: org.apache.cassandra.exceptions.ReadTimeoutException: Operation 
timed out - received only 0 responses.
        at 
org.apache.cassandra.service.ReadCallback.awaitResults(ReadCallback.java:132) 
~[apache-cassandra-3.9.jar:3.9]
        at org.apache.cassandra.service.ReadCallback.get(ReadCallback.java:137) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.AbstractReadExecutor.get(AbstractReadExecutor.java:145)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy$SinglePartitionReadLifecycle.awaitResultsAndRetryOnDigestMismatch(StorageProxy.java:1718)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:1667) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.readRegular(StorageProxy.java:1608) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:1527) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.db.SinglePartitionReadCommand$Group.execute(SinglePartitionReadCommand.java:975)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:271)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.cql3.statements.SelectStatement.execute(SelectStatement.java:232)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRoleFromTable(CassandraRoleManager.java:497)
 ~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.auth.CassandraRoleManager.getRole(CassandraRoleManager.java:485)
 ~[apache-cassandra-3.9.jar:3.9]
        ... 13 common frames omitted
INFO  [ScheduledTasks:1] 2018-03-28 04:48:13,521 StatusLogger.java:52 - Pool 
Name                    Active   Pending      Completed   Blocked  All Time 
Blocked
ERROR [Native-Transport-Requests-41] 2018-03-28 04:55:11,513 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
ERROR [Native-Transport-Requests-35] 2018-03-28 04:55:59,873 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.28:36986] 2018-03-28 04:55:59,874 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
        at 
ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:440) 
~[logback-classic-1.1.3.jar:na]
        at 
ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:396) 
~[logback-classic-1.1.3.jar:na]
        at ch.qos.logback.classic.Logger.error(Logger.java:555) 
~[logback-classic-1.1.3.jar:na]
        at 
org.apache.cassandra.streaming.StreamSession.onError(StreamSession.java:533) 
~[apache-cassandra-3.9.jar:3.9]
        at 
org.apache.cassandra.streaming.ConnectionHandler$OutgoingMessageHandler.run(ConnectionHandler.java:377)
 ~[apache-cassandra-3.9.jar:3.9]
        at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_91]
ERROR [Native-Transport-Requests-38] 2018-03-28 04:55:59,874 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
INFO  [STREAM-OUT-/10.21.20.28:4282] 2018-03-28 05:00:46,843 
StreamResultFuture.java:188 - [Stream #4dfbbd80-31b7-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
ERROR [IndexSummaryManager:1] 2018-03-28 05:02:15,535 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.26] 2018-03-28 05:09:27,777 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
INFO  [STREAM-OUT-/10.21.20.28:7066] 2018-03-28 05:20:58,308 
StreamResultFuture.java:188 - [Stream #364b7090-31b7-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
INFO  [STREAM-OUT-/10.21.20.28:12062] 2018-03-28 05:20:33,946 
StreamResultFuture.java:188 - [Stream #4e7caa20-31b3-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
INFO  [Service Thread] 2018-03-28 05:23:43,480 StatusLogger.java:56 - 
ViewMutationStage                 0         0              0         0          
       0

ERROR [MessagingService-Incoming-/10.21.20.25] 2018-03-28 05:23:43,480 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
INFO  [STREAM-OUT-/10.21.20.28:7878] 2018-03-28 05:24:10,052 
StreamResultFuture.java:188 - [Stream #04f62810-31b6-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
ERROR [MessagingService-Incoming-/10.21.20.26] 2018-03-28 05:25:14,091 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
INFO  [STREAM-OUT-/10.21.20.28:8733] 2018-03-28 05:27:21,114 
StreamResultFuture.java:188 - [Stream #d32ebcd0-31b4-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
INFO  [STREAM-OUT-/10.21.20.25:30439] 2018-03-28 05:40:32,712 
StreamResultFuture.java:188 - [Stream #e3d69890-31ba-11e8-b768-f997b824a5a9] 
Session with /10.21.20.25 is complete
INFO  [STREAM-OUT-/10.21.20.28:40626] 2018-03-28 05:42:04,661 
StreamResultFuture.java:188 - [Stream #e2a12a00-31b3-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
INFO  [STREAM-OUT-/10.21.20.28:48176] 2018-03-28 05:41:35,488 
StreamResultFuture.java:188 - [Stream #f1fe0c00-31b5-11e8-8fc5-39c988b353c2] 
Session with /10.21.20.28 is complete
INFO  [STREAM-OUT-/10.21.20.25:28491] 2018-03-28 05:44:47,779 
StreamResultFuture.java:188 - [Stream #cbb931f0-31ba-11e8-b768-f997b824a5a9] 
Session with /10.21.20.25 is complete
ERROR [InternalResponseStage:226] 2018-03-28 05:45:16,194 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
ERROR [GossipStage:1] 2018-03-28 06:34:18,404 CassandraDaemon.java:226 - 
Exception in thread Thread[GossipStage:1,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [BatchlogTasks:1] 2018-03-28 06:35:31,441 CassandraDaemon.java:226 - 
Exception in thread Thread[BatchlogTasks:1,5,main]
java.lang.OutOfMemoryError: Java heap space
WARN  [epollEventLoopGroup-2-8] 2018-03-28 06:34:42,168 Slf4JLogger.java:151 - 
An exceptionCaught() event was fired, and it reached at the tail of the 
pipeline. It usually means the last handler in the pipeline did not handle the 
exception.
java.lang.OutOfMemoryError: Java heap space
WARN  [epollEventLoopGroup-2-5] 2018-03-28 06:35:05,695 Slf4JLogger.java:146 - 
An exception 'java.lang.OutOfMemoryError: Java heap space' [enable DEBUG level 
for full stacktrace] was thrown by a user handler's exceptionCaught() method 
while handling the following exception:
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 06:39:05,020 
JVMStabilityInspector.java:141 - JVM state determined to be unstable.  Exiting 
forcefully due to:
java.lang.OutOfMemoryError: Java heap space
WARN  [epollEventLoopGroup-2-7] 2018-03-28 06:37:24,403 Slf4JLogger.java:151 - 
An exceptionCaught() event was fired, and it reached at the tail of the 
pipeline. It usually means the last handler in the pipeline did not handle the 
exception.
java.lang.OutOfMemoryError: Java heap space
ERROR [STREAM-OUT-/10.21.20.25:36579] 2018-03-28 06:36:42,564 
StreamSession.java:533 - [Stream #d7455580-31bf-11e8-b768-f997b824a5a9] 
Streaming error occurred on session with peer 10.21.20.25
java.lang.OutOfMemoryError: Java heap space
ERROR [MessagingService-Incoming-/10.21.20.27] 2018-03-28 06:36:42,204 
CassandraDaemon.java:226 - Exception in thread 
Thread[MessagingService-Incoming-/10.21.20.27,5,main]
java.lang.OutOfMemoryError: Java heap space
ERROR [ACCEPT-/10.21.20.24] 2018-03-28 06:39:46,868 CassandraDaemon.java:226 - 
Exception in thread Thread[ACCEPT-/10.21.20.24,5,main]
java.lang.OutOfMemoryError: Java heap space
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