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From "Patrick Hunt (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (ZOOKEEPER-3253) client should not send requests with cxid=-4, -2, or -1
Date Wed, 06 Mar 2019 02:41:00 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-3253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Patrick Hunt resolved ZOOKEEPER-3253.
-------------------------------------
       Resolution: Fixed
    Fix Version/s: 3.5.5
                   3.4.15

Issue resolved by pull request 787
[https://github.com/apache/zookeeper/pull/787]

> client should not send requests with cxid=-4, -2, or -1
> -------------------------------------------------------
>
>                 Key: ZOOKEEPER-3253
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-3253
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: java client
>    Affects Versions: 3.4.9, 3.5.4, 3.6.0
>            Reporter: Samuel Just
>            Assignee: Samuel Just
>            Priority: Minor
>              Labels: pull-request-available
>             Fix For: 3.6.0, 3.4.15, 3.5.5
>
>   Original Estimate: 48h
>          Time Spent: 4h 50m
>  Remaining Estimate: 43h 10m
>
> Once the cxid value increments to -4, the client will interpret the response as an auth
packet rather than as a response to a request and will transparently drop the response and
the request will hang.  Similarly, -2 will be seen as a ping and will be dropped hanging
the request.  -1 shows up as a WatcherEvent and results in the error below.
>  
> {quote}2019-01-07T21:58:23.209+00:00 [INFO ] [main-SendThread(mnds1-2-phx.ops.sfdc.net:2181)]
[ClientCnxn.java:1381] [:] - Session establishment complete on server mnds1-2-phx.ops.sfdc.net/10.246.244.71:2181,
sessionid = 0x267859729d66320, negotiated timeout = 10000
>  2019-01-07T21:58:22.281+00:00 20190107215822.281000 [WARN ] [main-SendThread(mnds1-3-phx.ops.sfdc.net:2181)]
[ClientCnxn.java:1235] [:] - Session 0x267859729d66320 for server mnds1-3-phx.ops.sfdc.net/10.246.244.69:2181,
unexpected error, closing socket connection and attempting reconnect
>  java.io.IOException: Unreasonable length = 892612659
>  at org.apache.jute.BinaryInputArchive.checkLength(BinaryInputArchive.java:127) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.jute.BinaryInputArchive.readString(BinaryInputArchive.java:81) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.zookeeper.proto.WatcherEvent.deserialize(WatcherEvent.java:66) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.zookeeper.ClientCnxn$SendThread.readResponse(ClientCnxn.java:839) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.zookeeper.ClientCnxnSocketNIO.doIO(ClientCnxnSocketNIO.java:101) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:363)
~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
>  at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1214) ~[zookeeper-3.5.3-beta.jar:3.5.3-beta-8ce24f9e675cbefffb8f21a47e06b42864475a60]
> {quote}
>  



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