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https://issues.apache.org/jira/browse/CASSANDRA-5154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13553934#comment-13553934
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Mariusz Gronczewski commented on CASSANDRA-5154:
------------------------------------------------
I've tried to restart both nodes and:
{code}
15:34:23]dev40:~☠ nodetool gossipinfo
/10.0.100.51
RELEASE_VERSION:1.1.7
RPC_ADDRESS:0.0.0.0
LOAD:2.671090404E9
STATUS:NORMAL,56713727820156407428984779325531226112
SCHEMA:38349a62-3e49-3b99-84af-f675dbdc3137
/10.0.100.52
/10.0.100.50
RELEASE_VERSION:1.1.7
RPC_ADDRESS:0.0.0.0
LOAD:1.139624484E9
STATUS:NORMAL,0
SCHEMA:38349a62-3e49-3b99-84af-f675dbdc3137
[15:34:30]dev40:~☠ nodetool ring
Note: Ownership information does not include topology, please specify a
keyspace.
Address DC Rack Status State Load Owns
Token
165262560952710176606119205433922453072
10.0.100.50 datacenter1 rack1 Up Normal 1.06 GB 2.87%
0
10.0.100.51 datacenter1 rack1 Up Normal 2.49 GB 33.33%
56713727820156407428984779325531226112
10.0.100.52 datacenter1 rack1 Down Normal ? 63.80%
165262560952710176606119205433922453072
{code}
{code}
[15:32:43]dev41:~ᛯ nodetool ring
Note: Ownership information does not include topology, please specify a
keyspace.
Address DC Rack Status State Load Owns
Token
56713727820156407428984779325531226112
10.0.100.50 datacenter1 rack1 Down Normal 1.06 GB 66.67%
0
10.0.100.51 datacenter1 rack1 Up Normal 2.49 GB 33.33%
56713727820156407428984779325531226112
[15:32:44]dev41:~ᛯ nodetool gossipinfo
/10.0.100.51
SCHEMA:38349a62-3e49-3b99-84af-f675dbdc3137
RPC_ADDRESS:0.0.0.0
STATUS:NORMAL,56713727820156407428984779325531226112
RELEASE_VERSION:1.1.7
LOAD:2.671090248E9
/10.0.100.50
SCHEMA:38349a62-3e49-3b99-84af-f675dbdc3137
RPC_ADDRESS:0.0.0.0
STATUS:NORMAL,0
RELEASE_VERSION:1.1.7
LOAD:1.139615032E9
{code}
so one node sees wrong state.
what fixed it on our dev servers was
* stopping node
* deleting all but schema* dirs in system/
* starting node
* repeating for other nodes
> Gossip sends removed node which causes restarted nodes to constantly create
> new threads
> ---------------------------------------------------------------------------------------
>
> Key: CASSANDRA-5154
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5154
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.1.7
> Environment: centos 6, JVM 1.6.0_37
> Reporter: Mariusz Gronczewski
>
> Our cassandra cluster had 14 nodes but it was mostly idle so about 2 weeks
> ago we removed 3 of them (via standard decommision) & moved tokens to balance
> load.
> Since then no node was restarted but last week after restarting 2 of them we
> observed that both of them spawn threads ( WRITE-/1.2.3.4 where 1.2.3.4 is
> one of removed nodes IPs ) till they hit limit ( which is 800 on our system)
> and then cassandra dies. Not restarted nodes do not do that. There are no
> outgoing connections to those dead nodes
> I noticed dead nodes are still in nodetool gossipinfo on non-restarted nodes
> but not on restarted ones so it seems they are not propertly removed from
> gossip.
> Would rolling restart work for fixing this or is full cluster stop-start
> required ?
> trace from hanging threads:
> {code}
> "WRITE-/1.2.3.4" daemon prio=10 tid=0x00007f5fe8194000 nid=0x2fb2 waiting on
> condition [0x00007f6020de0000]
> java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000007536a1160> (a
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:1987)
> at
> java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:399)
> at
> org.apache.cassandra.net.OutboundTcpConnection.run(OutboundTcpConnection.java:104)
> {code}
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