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From Hendrik Haddorp <hendrik.hadd...@gmx.net>
Subject Re: ClusterStateMutator
Date Wed, 04 Jan 2017 21:22:21 GMT
Hi Erik,

I have actually also seen that behavior already. So will check what
happens when I set that property.
I still believe I'm getting the clusterstate.json set already before the
node comes up again. But I will try to verify that further tomorrow.

thanks,
Hendrik

On 04/01/17 22:10, Erick Erickson wrote:
> Hendrik:
>
> Historically in 4.x, there was code that would reconstruct the
> clusterstate.json code. So you would see "deleted" collections come
> back. One scenario was:
>
> - Have a Solr node offline that had a replica for a collection.
> - Delete that collection
> - Bring the node back
> - It would register itself in clusterstate.json.
>
> So my guess is that something like this is going on and you're getting
> a clusterstate.json that's reconstructed (and possibly not complete).
>
> You can avoid this by specifying legacyCloud=false clusterprop
>
> Kind of a shot in the dark...
>
> Erick
>
> On Wed, Jan 4, 2017 at 11:12 AM, Hendrik Haddorp
> <hendrik.haddorp@gmx.net> wrote:
>> You are right, the code looks like it. But why did I then see collection
>> data in the clusterstate.json file? If version 1 is not used I would
>> assume that no data ends up in there. When explicitly setting the state
>> format 2 the system seemed to behave differently. And if the code always
>> uses version 2 shouldn't the default in that line be changed accordingly?
>>
>> On 04/01/17 16:41, Shalin Shekhar Mangar wrote:
>>> Actually the state format defaults to 2 since many releases (all of
>>> 6.x at least). This default is enforced in CollectionsHandler much
>>> before the code in ClusterStateMutator is executed.
>>>
>>> On Wed, Jan 4, 2017 at 6:16 PM, Hendrik Haddorp <hendrik.haddorp@gmx.net>
wrote:
>>>> Hi,
>>>>
>>>> in
>>>> solr-6.3.0/solr/core/src/java/org/apache/solr/cloud/overseer/ClusterStateMutator.java
>>>> there is the following code starting line 107:
>>>>
>>>> //TODO default to 2; but need to debug why BasicDistributedZk2Test fails
>>>> early on
>>>>     String znode = message.getInt(DocCollection.STATE_FORMAT, 1) == 1 ? null
>>>>         : ZkStateReader.getCollectionPath(cName);
>>>>
>>>> Any if that will be changed to default to version 2 anytime soon?
>>>>
>>>> thanks,
>>>> Hendrik
>>>


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