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https://issues.apache.org/jira/browse/TS-3848?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14729103#comment-14729103
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ASF subversion and git services commented on TS-3848:
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Commit 26b566e74e0a62db4b8210f51a908c1309ae96f9 in trafficserver's branch
refs/heads/master from [~ppradhan]
[ https://git-wip-us.apache.org/repos/asf?p=trafficserver.git;h=26b566e ]
TS-3848: Extend wait_for_cache to specify dependency on cache initialization.
This closes #282.
> ATS runs without cache or partial cache on disk errors
> ------------------------------------------------------
>
> Key: TS-3848
> URL: https://issues.apache.org/jira/browse/TS-3848
> Project: Traffic Server
> Issue Type: Bug
> Components: Cache
> Reporter: Pushkar Pradhan
> Assignee: Alan M. Carroll
> Fix For: 6.1.0
>
>
> Problem:
> If ATS fails to initialize the cache (none of the disks were accessible), the
> behavior depends on proxy.config.http.wait_for_cache:
> If wait_for_cache = 0, it will listen for requests and serve the requests (by
> fetching from origin/parent/peer).
> If wait_for_cache = 1, it will never listen for requests. This is almost like
> a hang.
> We would like to change this so that we can take some action when the cache
> fails to initialize (even partially):
> Proposed Solution:
> Define a new variable: proxy.config.http.cache.required
> Value range: 0-2
> 0 (default) - Do nothing
> 1 - Abort trafficserver if it failed to initialize all the disks/volumes
> 2 - Abort trafficserver if it failed to initialize even one of the disks or
> volumes.
> Preconditions for this new behavior are:
> proxy.config.http.cache.required = 1 (HTTP caching enabled) and
> proxy.config.http.wait_for_cache = 1.
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