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From Mark Miller <markrmil...@gmail.com>
Subject Re: SolrCloud - loop in recovery mode
Date Tue, 23 Oct 2012 13:29:38 GMT
This sounds like two issues. One, you are triggering a leader election
somehow. Do you see session expiration errors in the logs? You may
need to raise the timeout.

The second issue is probably related to what came out of
https://issues.apache.org/jira/browse/SOLR-3939

Shards that have no versions (because they are empty or just
replicated) cannot become the leader.

So if your indexes are empty and a leader election is triggered, no
one ends up becoming the leader.

This will be addressed in a release shortly, but the simple workaround
for now is simply to restart the shard and you will get a leader.

Next, you want to figure out why a leader election is being triggered
at that time (eg a zk session timeout?). Is the system under heavy
load at that point?

- Mark

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