Shawn Heisey created SOLR-4194:
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Summary: 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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