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https://issues.apache.org/jira/browse/ZOOKEEPER-2784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16015514#comment-16015514
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ASF GitHub Bot commented on ZOOKEEPER-2784:
-------------------------------------------
Github user asdf2014 commented on the issue:
https://github.com/apache/zookeeper/pull/257
Finally, it works :smile:
```bash
[exec] [junit] 2017-05-18 09:29:00,770 [myid:] - INFO
[main:ZKTestCase$1@58] - STARTING testSameSID
[exec] [junit] 2017-05-18 09:29:00,770 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24753 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,770 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24754 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,771 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24755 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,771 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24756 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,771 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24757 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,772 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24758 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,772 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24759 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,772 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24760 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,773 [myid:] - INFO
[main:PortAssignment@85] - Assigned port 24761 from range 24686 - 27378.
[exec] [junit] 2017-05-18 09:29:00,773 [myid:] - INFO
[main:JUnit4ZKTestRunner$LoggedInvokeMethod@77] - RUNNING TEST METHOD
testSameSID
[exec] [junit] 2017-05-18 09:29:00,773 [myid:] - INFO
[main:ServerCnxnFactory@134] - Using
org.apache.zookeeper.server.NIOServerCnxnFactory as server connection factory
[exec] [junit] 2017-05-18 09:29:00,773 [myid:] - INFO
[main:NIOServerCnxnFactory@673] - Configuring NIO connection handler with 10s
sessionless connection timeout, 3 selector thread(s), 48 worker threads, and 64
kB direct buffers.
[exec] [junit] 2017-05-18 09:29:00,774 [myid:] - INFO
[main:NIOServerCnxnFactory@686] - binding to port /127.0.0.1:24760
[exec] [junit] 2017-05-18 09:29:00,775 [myid:] - INFO
[main:CnxManagerTest@392] - Creating socket connection, host: 127.0.0.1, port:
24761
[exec] [junit] 2017-05-18 09:29:00,775 [myid:] - INFO
[QuorumPeerListener:QuorumCnxManager$Listener@636] - My election bind port:
/127.0.0.1:24761
[exec] [junit] 2017-05-18 09:29:00,775 [myid:] - INFO
[/127.0.0.1:24761:QuorumCnxManager$Listener@642] - Received connection request
/127.0.0.1:54430
[exec] [junit] 2017-05-18 09:29:00,775 [myid:] - WARN
[main:QuorumCnxManager@342] - Exception reading or writing challenge:
java.io.EOFException
[exec] [junit] 2017-05-18 09:29:00,776 [myid:] - ERROR
[/127.0.0.1:24761:QuorumCnxManager$Listener@664] - Appearing duplicate SID: 2
```
> Add some limitations on code level for `SID` to avoid configuration problem
> ---------------------------------------------------------------------------
>
> Key: ZOOKEEPER-2784
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2784
> Project: ZooKeeper
> Issue Type: Improvement
> Components: quorum
> Affects Versions: 3.5.2
> Reporter: Benedict Jin
> Fix For: 3.5.4
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> As so far, `QuorumCnxManager#receiveConnection` cannot find out the same
> `SID` problem, then the Zookeeper cluster will start successfully. But the
> cluster is not health, and it will throw some problem like `not
> synchronized`. So, i thought we should add some limitations on code level for
> `SID` to find those configuration problem more early.
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