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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-5131) Disable the istat daemon by default for 10.8.1
Date Mon, 14 Mar 2011 19:47:29 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13006595#comment-13006595
] 

Rick Hillegas commented on DERBY-5131:
--------------------------------------

Hi Mike,

I am going to back out this change after I create the 10.8.1 branch so I don't see that we
need to write those additional tests you recommend. By running the istat tests with this patch
applied, I have verified that the default behavior (for the 10.8 branch) will be istat=off.
Thanks.

> Disable the istat daemon by default for 10.8.1
> ----------------------------------------------
>
>                 Key: DERBY-5131
>                 URL: https://issues.apache.org/jira/browse/DERBY-5131
>             Project: Derby
>          Issue Type: Task
>          Components: SQL, Test
>            Reporter: Rick Hillegas
>         Attachments: derby-5131-01-aa-disableIn10.8.1.diff
>
>
> Turning on the istat daemon increases the risk of problems which arise when a database
shuts down in the middle of collecting index statistics. There is concern that this increased
risk could be significant. A consensus has developed that the istat daemon should not run
by default in 10.8.1. For the shutdown-related problem, see DERBY-5108. For the community
discussion of the risk to 10.8.1, see this email thread: http://old.nabble.com/opinions-on-a-less-aggressive-release-of-the-istats-feature--to31129980.html#a31143697
> This issue tracks the work needed to turn off the istat daemon (by default) in 10.8.1
but re-enable it as the default on the trunk.

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