卡桑德拉撞车了，不知道出了什么问题

Question

系统在一段时间后崩溃，以下情况除外：

Python Pycassa异常读取：

Error: An attempt was made to connect to each of the servers twice, but none of the attempts succeeded. The last failure was TTransportException: Could not connect to 10.242.253.141:9160

卡桑德拉系统日志

 WARN [MemoryMeter:1] 2012-07-31 12:44:17,555 Memtable.java (line 197) setting live ratio to minimum of 1.0 instead of 0.16881217597040166
 INFO [MemoryMeter:1] 2012-07-31 12:44:17,555 Memtable.java (line 213) CFS(Keyspace='system', ColumnFamily='HintsColumnFamily') liveRatio is 1.0 (just-counted was 1.0).  calculation took 28ms for 122 columns
 WARN [MemoryMeter:1] 2012-07-31 12:44:22,583 Memtable.java (line 197) setting live ratio to minimum of 1.0 instead of 0.11368422493368459
 INFO [MemoryMeter:1] 2012-07-31 12:44:22,586 Memtable.java (line 213) CFS(Keyspace='system', ColumnFamily='HintsColumnFamily') liveRatio is 1.0 (just-counted was 1.0).  calculation took 39ms for 358 columns
 INFO [GossipTasks:1] 2012-07-31 12:44:22,609 Gossiper.java (line 811) InetAddress /10.204.81.77 is now dead.
 WARN [MemoryMeter:1] 2012-07-31 12:44:25,244 Memtable.java (line 197) setting live ratio to minimum of 1.0 instead of 0.13325571841646536
 INFO [MemoryMeter:1] 2012-07-31 12:44:25,244 Memtable.java (line 213) CFS(Keyspace='system', ColumnFamily='HintsColumnFamily') liveRatio is 1.0 (just-counted was 1.0).  calculation took 46ms for 484 columns
 INFO [StorageServiceShutdownHook] 2012-07-31 12:44:26,679 CassandraDaemon.java (line 218) Stop listening to thrift clients
 INFO [StorageServiceShutdownHook] 2012-07-31 12:44:26,762 MessagingService.java (line 539) Waiting for messaging service to quiesce
 INFO [ACCEPT-/10.242.253.141] 2012-07-31 12:44:26,780 MessagingService.java (line 695) MessagingService shutting down server thread.
ERROR [Thrift:40765] 2012-07-31 12:44:26,858 CustomTThreadPoolServer.java (line 204) Error occurred during processing of message.
java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down
    at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:60)
    at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:816)
    at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1337)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:110)
    at org.apache.cassandra.service.StorageProxy.scheduleLocalHint(StorageProxy.java:386)
    at org.apache.cassandra.service.StorageProxy.sendToHintedEndpoints(StorageProxy.java:339)
    at org.apache.cassandra.service.StorageProxy$2.apply(StorageProxy.java:119)
    at org.apache.cassandra.service.StorageProxy.performWrite(StorageProxy.java:260)
    at org.apache.cassandra.service.StorageProxy.mutate(StorageProxy.java:193)
    at org.apache.cassandra.thrift.CassandraServer.doInsert(CassandraServer.java:637)
    at org.apache.cassandra.thrift.CassandraServer.internal_insert(CassandraServer.java:511)
    at org.apache.cassandra.thrift.CassandraServer.insert(CassandraServer.java:519)
    at org.apache.cassandra.thrift.Cassandra$Processor$insert.getResult(Cassandra.java:3016)
    at org.apache.cassandra.thrift.Cassandra$Processor$insert.getResult(Cassandra.java:3004)
    at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
    at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
    at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:186)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)
ERROR [Thrift:42739] 2012-07-31 12:44:26,935 CustomTThreadPoolServer.java (line 204) Error occurred during processing of message.
java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down
    at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:60)
    at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:816)
    at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1337)
    at java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:110)
    at org.apache.cassandra.service.StorageProxy.scheduleLocalHint(StorageProxy.java:386)
    at org.apache.cassandra.service.StorageProxy.sendToHintedEndpoints(StorageProxy.java:339)
    at org.apache.cassandra.service.StorageProxy$2.apply(StorageProxy.java:119)
    at org.apache.cassandra.service.StorageProxy.performWrite(StorageProxy.java:260)
    at org.apache.cassandra.service.StorageProxy.mutate(StorageProxy.java:193)
    at org.apache.cassandra.thrift.CassandraServer.doInsert(CassandraServer.java:637)
    at org.apache.cassandra.thrift.CassandraServer.internal_batch_mutate(CassandraServer.java:587)
    at org.apache.cassandra.thrift.CassandraServer.batch_mutate(CassandraServer.java:595)
    at org.apache.cassandra.thrift.Cassandra$Processor$batch_mutate.getResult(Cassandra.java:3112)
    at org.apache.cassandra.thrift.Cassandra$Processor$batch_mutate.getResult(Cassandra.java:3100)
    at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
    at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
    at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:186)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
    at java.lang.Thread.run(Thread.java:722)

卡桑达.亚姆

^{pr2}$

怎么了？请指路？在

Answer 1

我也有同样的问题。我先想了两件事

sudo vim /etc/cassandra/cassandra.yaml

将侦听ip更改为您在AWS上的私有ip，并将rpc_ip更改为0.0.0.0

还要确保你的服务器至少有2GB内存，否则卡桑德拉会一直崩溃！！在

要在ubuntu上启动cassandra，请尝试以下命令：

^{pr2}$

去查一下情况呢

sudo service cassandra status

希望这有帮助

Answer 2

看起来卡桑德拉进程被关闭了，大概是因为收到了信号。这些线表示：

INFO [StorageServiceShutdownHook] 2012-07-31 12:44:26,679 CassandraDaemon.java (line 218) Stop listening to thrift clients
INFO [StorageServiceShutdownHook] 2012-07-31 12:44:26,762 MessagingService.java (line 539) Waiting for messaging service to quiesce
INFO [ACCEPT-/10.242.253.141] 2012-07-31 12:44:26,780 MessagingService.java (line 695) MessagingService shutting down server thread.
ERROR [Thrift:40765] 2012-07-31 12:44:26,858 CustomTThreadPoolServer.java (line 204) Error occurred during processing of message.
java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down