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https://issues.apache.org/jira/browse/ZOOKEEPER-2549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15723470#comment-15723470
 ] 

ASF GitHub Bot commented on ZOOKEEPER-2549:
-------------------------------------------

Github user yufeldman commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/99#discussion_r90963562
  
    --- Diff: src/java/main/org/apache/zookeeper/server/NettyServerCnxn.java ---
    @@ -71,7 +71,7 @@
         NettyServerCnxnFactory factory;
         boolean initialized;
         
    -    NettyServerCnxn(Channel channel, ZooKeeperServer zks, 
NettyServerCnxnFactory factory) {
    +    public NettyServerCnxn(Channel channel, ZooKeeperServer zks, 
NettyServerCnxnFactory factory) {
    --- End diff --
    
    Interesting. For me it actually is:
    
    2016-12-05 11:11:02,523 [myid:] - INFO  [Time-limited 
test:JUnit4ZKTestRunner$LoggedInvokeMethod@98] - TEST METHOD FAILED 
testNettyRunTimeException
    **java.io.IOException: Couldn't instantiate 
org.apache.zookeeper.server.NettyServerCnxnFactory
            at 
org.apache.zookeeper.server.ServerCnxnFactory.createFactory(ServerCnxnFactory.java:141)
            at 
org.apache.zookeeper.server.ServerCnxnFactory.createFactory(ServerCnxnFactory.java:157)
            at 
org.apache.zookeeper.server.ServerCnxnFactory.createFactory(ServerCnxnFactory.java:151)**



> As NettyServerCnxn.sendResponse() allows all the exception to bubble up it 
> can stop main ZK requests processing thread
> ----------------------------------------------------------------------------------------------------------------------
>
>                 Key: ZOOKEEPER-2549
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2549
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.1
>            Reporter: Yuliya Feldman
>            Assignee: Yuliya Feldman
>         Attachments: ZOOKEEPER-2549-2.patch, ZOOKEEPER-2549-3.patch, 
> ZOOKEEPER-2549-3.patch, ZOOKEEPER-2549-4.patch, ZOOKEEPER-2549-5.patch, 
> ZOOKEEPER-2549.patch, ZOOKEEPER-2549.patch, zookeeper-2549-1.patch
>
>
> As NettyServerCnxn.sendResponse() allows all the exception to bubble up it 
> can stop main ZK requests processing thread and make Zookeeper server look 
> like it is hanging, while it just can not process any request anymore.
> Idea is to catch all the exceptions in NettyServerCnxn.sendResponse() , 
> convert them to IOException and allow it propagating up



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