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From Edwin Lee <>
Subject To Detect Wheter Core is Available To Post
Date Tue, 26 Jan 2016 04:34:50 GMT
Hi All,

Our team is using the Solr to process log and we met a problem in SOLR

We want to detect the health of each core —- whether they are available to
post. We have to figure out ways to do that:

   1. Using luke request . —- Cost is a bit high for core loading
   2. We have designed a cache and adding the hook when the core is open or
   closed to record whether the core is loaded. —- *Question: If a core is
   loaded, is there situation that we still cannot post data to it?*
   3. We try to post some meanless data with our unique id, and delete that
   data within the same commit, for example, if we use json to post data, it
   is like this,

    "add": {
            "id": "%%ID%%"
    "delete": { "id": "%%ID%%" },
    "commit": {}}

*But we still not 100% sure whether it will mess up with our normal data.*

What is the best way for this requirment. We want to consult your opinions.

Thank you.

Edwin Lee

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