原文：https://blog.csdn.net/desilting/article/details/41750737
zookeeper的事务日志通过zoo.cfg文件中的dataLogDir配置项配置，文件如下：
zookeeper提供了查看事务日志的工具类LogFormatter ，运行：
java -classpath .:slf4j-api-1.6.1.jar:zookeeper-3.4.5.jar org.apache.zookeeper.server.LogFormatter /export1/zookeeper/logs/version-2/log.1000003d2
java -cp /opt/kafka_2.12-0.10.2.2/libs/zookeeper-3.4.9.jar:/opt/kafka_2.12-0.10.2.2/libs/slf4j-api-1.7.21.jar
org.apache.zookeeper.server.LogFormatter log.8000a39b7?
将看到格式化的日志内容类似：
ZooKeeper Transactional Log File with dbid 0 txnlog format version 2
5/12/14 7:06:31 PM CST session 0x145ef610b530000 cxid 0x229e zxid 0x1000003e8 delete '/hbase/region-in-transition/e3d18e83988febe321e563f085210127
5/12/14 7:06:31 PM CST session 0x245ef610b52004c cxid 0x0 zxid 0x1000003e9 createSession 40000
5/12/14 7:06:31 PM CST session 0x245ef610b52004c cxid 0x3 zxid 0x1000003ea closeSession null
5/12/14 7:06:31 PM CST session 0x545f01346c60001 cxid 0x0 zxid 0x1000003eb createSession 40000
5/12/14 7:06:31 PM CST session 0x545f01346c60001 cxid 0x3 zxid 0x1000003ec closeSession null
5/12/14 7:06:32 PM CST session 0x445f018d5e00002 cxid 0x0 zxid 0x1000003ed createSession 40000
5/12/14 7:06:32 PM CST session 0x445f018d5e00002 cxid 0x3 zxid 0x1000003ee closeSession null
5/12/14 7:06:32 PM CST session 0x145ef610b530000 cxid 0x22a1 zxid 0x1000003ef setData '/hbase/table/wyp,#ffffffff000146d61737465723a36303030303b36ffffffc765ffffffb0ffffffa5ffffffa3745042554681,5
5/12/14 7:06:32 PM CST session 0x145ef610b530000 cxid 0x22a3 zxid 0x1000003f0 delete '/hbase/table-lock/wyp/write-master:600000000000002
5/12/14 7:06:32 PM CST session 0x145ef610b530033 cxid 0x0 zxid 0x1000003f1 createSession 40000
5/12/14 7:06:32 PM CST session 0x145ef610b530033 cxid 0x3 zxid 0x1000003f2 closeSession nul