[jira] [Resolved] (BOOKKEEPER-105) A Bookkeeper can only open one LedgerHandle to a specific ledger at a time, if it expects them to work

["Ivan Kelly (Resolved) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BOOKKEEPER-105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ivan Kelly resolved BOOKKEEPER-105.
-----------------------------------

    Resolution: Duplicate

Ah, so you did. I missed that.
                
> A Bookkeeper can only open one LedgerHandle to a specific ledger at a time, if it expects them to work
> ------------------------------------------------------------------------------------------------------
>
>                 Key: BOOKKEEPER-105
>                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-105
>             Project: Bookkeeper
>          Issue Type: Bug
>            Reporter: Ivan Kelly
>
> If you open two ledger handles pointing to the same ledger, using the same client, you will not be able to read from both. This is due to them sharing PerChannelBookieClient instances. PerChannelBookieClient has a member 
> {code}
>     ConcurrentHashMap<CompletionKey, ReadCompletion> readCompletions = new ConcurrentHashMap<CompletionKey, ReadCompletion>();
> {code}
> where CompletionKey is the ledgerId and entryId. If both LedgerHandles try to read the same entryId, they'll override each other on this hashmap.

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