我已经开始使用 cassandra。因此，我已将 cassandra (1.1.1) 下载到我的 Windows 电脑并启动它。一切正常。因此，我开始重新实现一个旧应用程序（在 java 中使用 hector 1.1），它为 4 个表导入了大约 200.000.000，这些表应该插入到 4 个列族中。导入大约 2.000.000 条记录后，我得到一个超时异常，并且 cassandra 没有响应请求：
2012-07-03 15:35:43,299 WARN - Could not fullfill request on this host CassandraClient<localhost:9160-16>
2012-07-03 15:35:43,300 WARN - Exception: me.prettyprint.hector.api.exceptions.HTimedOutException: TimedOutException()
....
Caused by: TimedOutException()
at org.apache.cassandra.thrift.Cassandra$batch_mutate_result.read(Cassandra.java:20269)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:78)
at org.apache.cassandra.thrift.Cassandra$Client.recv_batch_mutate(Cassandra.java:922)
at org.apache.cassandra.thrift.Cassandra$Client.batch_mutate(Cassandra.java:908)
at me.prettyprint.cassandra.model.MutatorImpl$3.execute(MutatorImpl.java:246)
at me.prettyprint.cassandra.model.MutatorImpl$3.execute(MutatorImpl.java:243)
at me.prettyprint.cassandra.service.Operation.executeAndSetResult(Operation.java:103)
at me.prettyprint.cassandra.connection.HConnectionManager.operateWithFailover(HConnectionManager.java:258)
日志文件中的最后一个条目是：
INFO 15:35:31,678 Writing Memtable-cf2@678837311(7447722/53551072 serialized/live bytes, 262236 ops)
INFO 15:35:32,810 Completed flushing \var\lib\cassandra\data\keySpaceName\cf2\keySpaceName-cf2-hd-205-Data.db (3292685 bytes) for commitlog position ReplayPosition(segmentId=109596147695328, position=131717208)
INFO 15:35:33,282 Compacted to [\var\lib\cassandra\data\keySpaceName\cf3\keySpaceName-cf3-hd-29-Data.db,]. 33.992.615 to 30.224.481 (~88% of original) bytes for 282.032 keys at 1,378099MB/s. Time: 20.916ms.
INFO 15:35:33,286 Compacting [SSTableReader(path='\var\lib\cassandra\data\keySpaceName\cf4\keySpaceName-cf4-hd-8-Data.db'), SSTableReader(path='\var\lib\cassandra\data\keySpaceName\cf4\keySpaceName-cf4-hd-6-Data.db'), SSTableReader(path='\var\lib\cassandra\data\keySpaceName\cf4\keySpaceName-cf4-hd-7-Data.db'), SSTableReader(path='\var\lib\cassandra\data\keySpaceName\cf4\keySpaceName-cf4-hd-5-Data.db')]
INFO 15:35:34,871 Compacted to [\var\lib\cassandra\data\keySpaceName\cf4\keySpaceName-cf4-hd-9-Data.db,]. 4.249.270 to 2.471.543 (~58% of original) bytes for 30.270 keys at 1,489916MB/s. Time: 1.582ms.
INFO 15:35:41,858 Compacted to [\var\lib\cassandra\data\keySpaceName\cf2\keySpaceName-cf2-hd-204-Data.db,]. 48.868.818 to 24.033.164 (~49% of original) bytes for 135.367 keys at 2,019011MB/s. Time: 11.352ms.
我创建了 4 个列族，如下所示：
ColumnFamilyDefinition cf1 = HFactory.createColumnFamilyDefinition(
“keyspacename”,
“cf1”,
ComparatorType.ASCIITYPE);
列族具有以下列计数：
- 16列
- 14列
- 7 科尔门
- 5列
键空间是使用复制因子 1 和默认策略（简单）创建的，我使用“Mutator#AddInsertion”插入记录（行）
有什么建议可以避免这个例外吗？
问候西医