maoling opened a new pull request #624: ZOOKEEPER-3108:use a new property:myid in the zoo.cfg to substitute for myid file under the dataDir URL: https://github.com/apache/zookeeper/pull/624 - use a new property `myid` in the `zoo.cfg` to substitute for `myid `file,If the unique id is both set in the `myid` of `zoo.cfg` and `myid` file,they must be the same value. - I had tested this patch in my docker in standalone and qurom mode with mixed `myid` file and the `myid`property in the zoo.cfg. it has any intrude,totally backwards compatibility,branch3.4 can still use myid file, but branch 3.5+, suggest to use `myid `in the zoo.cfg - the related UTs `ZooKeeperServerMainTest.testStandalone()` and `QuorumPeerMainTest.testQuorum() `have passed,before reviewing,let's listen to the QA report in case of something I miss - more details and disscusion in [ZOOKEEPER-3108](https://issues.apache.org/jira/browse/ZOOKEEPER-3108) - Let me list why this is needed: **1.** put the `myid` which's about the conf of server in the `dataDir` is not a good idea.if I want to `rm -rf `the data in this directory manually,I will delete the `myid` file by mistake. **2.** conf like this will be easy-to-read,and tell me who I am, just like `kafka's` `server.properties` does. ``` myid = 2 ---*******--- server.1=172.17.0.2:2888:3888 server.2=172.17.0.2:12888:13888 server.3=172.17.0.2:22888:23888 ```
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