zookeeper-flush WAL file slowly

2014-05-15 09:08:01,803 [myid:5] - WARN  [SyncThread:5:FileTxnLog@321] - fsync-ing the write ahead log in SyncThread:5 took 15154ms which will adversely effect operation latency. See the ZooKeeper troubleshooting guide

 TODO

-resolution A:decrease high io

 

 

-resolution B:decrease nodes registered to zk so also decrease written edits to WAL

 

-C :check GC

 

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