我在Cassandra的某个地方收到了一个OOM例外.我是一个运行在适度供电的服务器上的单个实例,我正在进行一些负载测试,所以毫不奇怪.
但是,我后来无法使用该实例.当我列出键空间时,只显示"系统".但是当我尝试重新创建我正在测试的密钥空间时,Hector会回应可怕的"所有主机池都被标记下来.重试负担被推送到客户端." 消息,并且Cassandra日志具有以下堆栈跟踪:
ERROR [MigrationStage:1] 2012-04-27 20:47:00,863 AbstractCassandraDaemon.java (line 134) Exception in thread Thread[MigrationStage:1,5,main]
java.lang.AssertionError
at org.apache.cassandra.db.DefsTable.updateKeyspace(DefsTable.java:441)
at org.apache.cassandra.db.DefsTable.mergeKeyspaces(DefsTable.java:339)
at org.apache.cassandra.db.DefsTable.mergeSchema(DefsTable.java:269)
at org.apache.cassandra.service.MigrationManager$1.call(MigrationManager.java:214)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
ERROR [Thrift:9] 2012-04-27 20:47:00,864 CustomTThreadPoolServer.java (line 204) Error occurred during processing of message.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.AssertionError
at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:372)
at org.apache.cassandra.service.MigrationManager.announce(MigrationManager.java:191)
at org.apache.cassandra.service.MigrationManager.announceNewKeyspace(MigrationManager.java:129)
at org.apache.cassandra.thrift.CassandraServer.system_add_keyspace(CassandraServer.java:987)
at org.apache.cassandra.thrift.Cassandra$Processor$system_add_keyspace.getResult(Cassandra.java:3370)
at org.apache.cassandra.thrift.Cassandra$Processor$system_add_keyspace.getResult(Cassandra.java:3358)
at org.apache.thrift.ProcessFunction.process(ProcessFunction.java:32)
at org.apache.thrift.TBaseProcessor.process(TBaseProcessor.java:34)
at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:186)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.util.concurrent.ExecutionException: java.lang.AssertionError
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at …