我遇到了这里描述的确切问题https://issues.apache.org/jira/browse/CASSANDRA-4363但使用 Cassandra 1.1.2，cqlsh --cql3。
当我尝试创建列族时，我得到的错误是
Traceback (most recent call last):
File "./cqlsh", line 1008, in perform_statement
self.cursor.execute(statement, decoder=decoder)
File "./../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cursor.py", line 117, in execute
response = self.handle_cql_execution_errors(doquery, prepared_q, compress)
File "./../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cursor.py", line 132, in handle_cql_execution_errors
return executor(*args, **kwargs)
File "./../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cassandra/Cassandra.py", line 1583, in execute_cql_query
self.send_execute_cql_query(query, compression)
File "./../lib/cql-internal-only-1.0.10.zip/cql-1.0.10/cql/cassandra/Cassandra.py", line 1593, in send_execute_cql_query
self._oprot.trans.flush()
File "./../lib/thrift-python-internal-only-0.7.0.zip/thrift/transport/TTransport.py", line 293, in flush
self.__trans.write(buf)
File "./../lib/thrift-python-internal-only-0.7.0.zip/thrift/transport/TSocket.py", line 117, in write
plus = self.handle.send(buff)
error: [Errno 32] Broken pipe
有时我只是让 TSocket 读取 0 个字节。
服务器端日志也和 JIRA 票证中提到的一样。
ERROR [Thrift:12] 2012-09-05 12:06:10,999 CustomTThreadPoolServer.java (line 204) Error occurred during processing of message.
java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.NullPointerException
at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:373)
at org.apache.cassandra.service.MigrationManager.announce(MigrationManager.java:188)
at org.apache.cassandra.service.MigrationManager.announceNewColumnFamily(MigrationManager.java:139)
at org.apache.cassandra.cql3.statements.CreateColumnFamilyStatement.announceMigration(CreateColumnFamilyStatement.java:83)
at org.apache.cassandra.cql3.statements.SchemaAlteringStatement.execute(SchemaAlteringStatement.java:99)
at org.apache.cassandra.cql3.QueryProcessor.processStatement(QueryProcessor.java:108)
at org.apache.cassandra.cql3.QueryProcessor.process(QueryProcessor.java:121)
at org.apache.cassandra.thrift.CassandraServer.execute_cql_query(CassandraServer.java:1237)
at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:3542)
at org.apache.cassandra.thrift.Cassandra$Processor$execute_cql_query.getResult(Cassandra.java:3530)
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$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
at org.apache.cassandra.utils.FBUtilities.waitOnFuture(FBUtilities.java:369)
... 15 more
Caused by: java.lang.NullPointerException
at org.apache.cassandra.utils.ByteBufferUtil.string(ByteBufferUtil.java:167)
我尝试删除 /var/lib/cassandra 目录并重新启动服务器。我仍然得到错误。JIRA 中的此错误已标记为无法重现，已修复版本无。那么我该怎么做才能让我的 cassandra 再次工作呢？