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From "Matteo Bertozzi (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-4393) Implement a canary monitoring program
Date Mon, 26 Mar 2012 19:56:33 GMT

     [ https://issues.apache.org/jira/browse/HBASE-4393?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matteo Bertozzi updated HBASE-4393:
-----------------------------------

    Attachment: Canary-v0.java

I've attached a new version of the canary following the stack comments.

Now the canary is a tool, and has a command line with a couple of options.

In this implementations the canary runs "forever" and has a pluggable sink interface to collect
and output failures and read latencies.

At the moment the only sink implemented is the FileSink that allows to use a file or stdout
as output device. But we can add support for the hadoop metrics later.
                
> Implement a canary monitoring program
> -------------------------------------
>
>                 Key: HBASE-4393
>                 URL: https://issues.apache.org/jira/browse/HBASE-4393
>             Project: HBase
>          Issue Type: New Feature
>          Components: monitoring
>    Affects Versions: 0.92.0
>            Reporter: Todd Lipcon
>            Assignee: Amandeep Khurana
>         Attachments: Canary-v0.java, HBaseCanary.java
>
>
> This JIRA is to implement a standalone program that can be used to do "canary monitoring"
of a running HBase cluster. This program would gather a list of the regions in the cluster,
then iterate over them doing lightweight operations (eg short scans) to provide metrics about
latency as well as alert on availability issues.

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