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From "Jay Kreps (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (KAFKA-191) Investigate removing the synchronization in Log.flush
Date Sun, 06 Nov 2011 03:22:55 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-191?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jay Kreps updated KAFKA-191:
----------------------------

    Attachment: KAFKA-191.patch
    
> Investigate removing the synchronization in Log.flush
> -----------------------------------------------------
>
>                 Key: KAFKA-191
>                 URL: https://issues.apache.org/jira/browse/KAFKA-191
>             Project: Kafka
>          Issue Type: New Feature
>          Components: core
>    Affects Versions: 0.8
>            Reporter: Jay Kreps
>            Assignee: Neha Narkhede
>         Attachments: KAFKA-191.patch
>
>
> Currently we have the following synchronization in Log.scala:
> 1. append, roll, and flush all share a write lock
> 2. read is non-blocking
> Unfortunately this means that flush time latency is added to appends (even if the flush
is done by a background thread). To fix this we should investigate a scheme to make append
and flush not block each other.

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