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From Erick Erickson <erickerick...@gmail.com>
Subject Re: ClusterStateMutator
Date Wed, 04 Jan 2017 21:10:05 GMT
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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