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From "Michael Han (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (ZOOKEEPER-2362) ZooKeeper multi / transaction allows partial read
Date Mon, 13 Mar 2017 16:22:11 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-2362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Han updated ZOOKEEPER-2362:
-----------------------------------
    Fix Version/s:     (was: 3.4.11)
                       (was: 3.5.3)
                   3.6.0
                   3.5.4

> ZooKeeper multi / transaction allows partial read
> -------------------------------------------------
>
>                 Key: ZOOKEEPER-2362
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2362
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.4.6
>            Reporter: Whitney Sorenson
>            Priority: Critical
>             Fix For: 3.5.4, 3.6.0
>
>
> In this thread http://mail-archives.apache.org/mod_mbox/zookeeper-user/201602.mbox/%3CCAPbqGzicBkLLyVDm7RFM20z0y3X1v1P-C9-1%3D%3D1DDqRDTzdOmQ%40mail.gmail.com%3E
, I discussed an issue I've now seen in multiple environments:
> In a multi (using Curator), I write 2 new nodes. At some point, I issue 2 reads for these
new nodes. In one read, I see one of the new nodes. In a subsequent read, I fail to see the
other new node:
> 1. Starting state : { /foo = <does not exist>, /bar = <does not exist> }
> 2. In a multi, write: { /foo = A, /bar = B}
> 3. Read /foo as A
> 4. Read /bar as <does not exist> 
> #3 and #4 are issued 100% sequentially.
> It is not known at what point during #2, #3 starts.
> Note: the reads are getChildren() calls.



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