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https://issues.apache.org/jira/browse/ZOOKEEPER-2503?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16776132#comment-16776132
]
maoling commented on ZOOKEEPER-2503:
------------------------------------
when set the number of myid to a invalid one(e.g 256),we will get:
2019-02-24 05:40:01,095 [myid:] - INFO [main:QuorumPeerConfig@141] - Reading
configuration from: /data/software/zookeeper/zookeeper-test3/bin/../conf/zoo.cfg
2019-02-24 05:40:01,103 [myid:] - WARN [main:VerifyingFileFactory@59] -
../../zkdata3 is relative. Prepend ./ to indicate that you're sure!
2019-02-24 05:40:01,104 [myid:] - WARN [main:VerifyingFileFactory@59] -
../../zkdataLog3 is relative. Prepend ./ to indicate that you're sure!
2019-02-24 05:40:01,110 [myid:] - INFO [main:QuorumPeerConfig@406] -
clientPortAddress is 0.0.0.0:32181
2019-02-24 05:40:01,110 [myid:] - INFO [main:QuorumPeerConfig@410] -
secureClientPort is not set
2019-02-24 05:40:01,110 [myid:] - INFO [main:QuorumPeerConfig@427] -
observerMasterPort is not set
2019-02-24 05:40:01,110 [myid:] - INFO [main:QuorumPeerConfig@445] -
metricsProvider.className is
org.apache.zookeeper.metrics.impl.NullMetricsProvider
2019-02-24 05:40:01,120 [myid:256] - ERROR [main:QuorumPeerMain@94] - Invalid
config, exiting abnormally
org.apache.zookeeper.server.quorum.QuorumPeerConfig$ConfigException: Error
processing /data/software/zookeeper/zookeeper-test3/bin/../conf/zoo.cfg
at
org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:162)
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:118)
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:87)
*Caused by: java.lang.IllegalArgumentException: myid must have a value between
1 and 255.*
at
org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupMyId(QuorumPeerConfig.java:726)
at
org.apache.zookeeper.server.quorum.QuorumPeerConfig.setupQuorumPeerConfig(QuorumPeerConfig.java:638)
at
org.apache.zookeeper.server.quorum.QuorumPeerConfig.parseProperties(QuorumPeerConfig.java:455)
at
org.apache.zookeeper.server.quorum.QuorumPeerConfig.parse(QuorumPeerConfig.java:158)
... 2 more
Invalid config, exiting abnormally
> Inconsistency between myid documentation and implementation
> -----------------------------------------------------------
>
> Key: ZOOKEEPER-2503
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2503
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.4.9, 3.5.2, 3.4.11
> Reporter: Michael Han
> Assignee: maoling
> Priority: Major
>
> In ZK documentation, we have:
> "The myid file consists of a single line containing only the text of that
> machine's id. So myid of server 1 would contain the text "1" and nothing
> else. The id must be unique within the ensemble and should have a value
> between 1 and 255."
> This however is not enforced in code, which should be fixed either in
> documentation that we remove the restriction of the range 1-255 or in code we
> enforce such constraint.
> Discussion thread:
>
> [http://zookeeper-user.578899.n2.nabble.com/Is-myid-actually-limited-to-1-255-td7581270.html]
>
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