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https://issues.apache.org/jira/browse/SOLR-4194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13532740#comment-13532740
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Shawn Heisey commented on SOLR-4194:
------------------------------------
Jetty request log. All of these requests are generated from the one call to
/admin/ping. All of the shards are locally hosted on this dev machine.
{noformat}
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s1live/lbcheck
HTTP/1.1" 200 395
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/inclive/lbcheck
HTTP/1.1" 200 396
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s0live/lbcheck
HTTP/1.1" 200 395
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s2live/lbcheck
HTTP/1.1" 200 395
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s4live/lbcheck
HTTP/1.1" 200 395
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s5live/lbcheck
HTTP/1.1" 200 395
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s3live/lbcheck
HTTP/1.1" 200 391
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/ncmain/lbcheck
HTTP/1.1" 200 902
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s5live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s3live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s1live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s4live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/inclive/admin/ping
HTTP/1.1" 503 409
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s0live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "POST /solr/s2live/admin/ping
HTTP/1.1" 503 408
10.100.1.39 - - [14/Dec/2012:22:14:01 +0000] "GET
/solr/ncmain/admin/ping?qt.path=%2Fadmin%2Fping&wt=javabin&version=2 HTTP/1.1"
200 521
{noformat}
> PingRequestHandler - shards parameter inherited from search handler definition
> ------------------------------------------------------------------------------
>
> Key: SOLR-4194
> URL: https://issues.apache.org/jira/browse/SOLR-4194
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.1
> Environment: solr-impl 4.1-SNAPSHOT 1421496 - ncindex - 2012-12-13
> 14:56:25
> Reporter: Shawn Heisey
> Fix For: 4.1, 5.0
>
>
> Included in all my cores is a PingRequestHandler named /admin/ping, which I
> use to enable/disable the server from the perspective of a load balancer
> running haproxy. The handler includes a qt parameter set to /lbcheck.
> I have a special core defined (I call it a broker) that includes the shards
> parameter in most of its search handler definitions. This includes /select,
> /lbcheck, and others.
> When the /admin/ping handler is called, the query is sent to the /lbcheck
> parameter as expected, which gets distributed because it includes shards. If
> one of those shards happens to be down, the handler will give an error
> response to the load balancer.
> The problem is that the PingRequestHandler seems to inherit the shards
> parameter from the search handler it is using, which causes the /admin/ping
> request itself to be distributed, which is not what I want. The individual
> shards are not used by the load balancer, so they always remain disabled.
> This works perfectly in 3.5.0. The official 4.0.0 release has not been
> tested.
> Config and log data will follow in the comments.
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