Hey,
We have a SolrCloud collection with 8 replicas, and one of those replicas has
the `property.preferredleader: true` set. However when we perform a
`REBALANCELEADERS` we get:
```
{
"responseHeader": {
"status": 0,
"QTime": 62268
},
"Summary": {
"Failure": "Not all active replicas with preferredLeader property are
leaders"
},
"failures": {
"shard1": {
"status": "failed",
"msg": "Could not change leder for slice shard1 to core_node9"
}
}
}
```
There is nothing in the solr logs on any of the nodes to indicate the reason
for the failure.
What I have noticed is that 4 of the nodes briefly go orange in the gui (eg
“down”), and for a moment 9 of them go into yellow (eg “recovering”), before
all becoming active again with the same (incorrect) leader.
We use the same model on 4 other collections to set the preferred leader to a
particular replica and they all work fine.
Does anyone have any ideas?
Thanks
Karl
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