> On 8 Jul 2021, at 7:00 PM, Reej M <reej...@gmail.com> wrote:
>
> Hi All,
>
> We are upgrading from solr 4 to solr 8. Updated the solr server to solr8.8.2,
> solrj8.8.2.
> We are trying to resume the code and in one place where we are trying to get
> a collection from clusterstate. Code used is as below
>
> Clusterstate clusterState = null;
> For(SearchSolrZookeeper zk:livezks){
> SolrZkClient zkClient = null;
> ZKStateReader stateReader = null;
> Try{
> Zkclient = new SolrZkClient(zk.getUrl(), 3000);
> stateReader = new ZKStateReader(Zkclient);
> stateReader.createClusterStateWatchersAndUpdate();
> clusterState = stateReader.getClusterState();
> Connected = true;
> Exception = null;
> break;
> }
> Catch(){
> }
> Finally{
> State reader.close();
> Zkclient.close();
> }
>
> If(clusterstate!=null){
> Doccollection dc = clusterstate.getCollection(“INVOICE”);
> //here dc is null
> }
> }
>
>
> Tried using getcollectionornull - returns null
> Getcollectionornull(collection name, true) — returns null
>
> When I debug I can see clusterstate has below values in it
>
Using SOLR8
> Znodeversion:0
> Live node:[192.123.33.44:3883_Solr,
> 192.123.33.44:9883_Solr,192.123.33.45:3883_Solr,192.123.33.45:3883_Solr]
> Collections:{ORDER=LazyCollectionRef(ORDER), INVOICE=
> LazyCollectionRef(INVOICE), PAYMENT= LazyCollectionRef(PAYMENT),etc..}
When Debugging with Solr4 clusterstate is as below
> Znodeversion:134
> Live node:[192.123.33.44:3883_Solr,
> 192.123.33.44:9883_Solr,192.123.33.45:3883_Solr,192.123.33.45:3883_Solr]
> Collections:{ORDER(ORDER/clusterstate.json/134)={
“Replication factor”:”1”,
“Shards”:{“shard1”:{
Range:
“State”:”active”,
“Replicas”:{
“Core_node1”:{
“Core”:ORDER_shard1_replica1
“Base_url:
“Node_name”:”http://xxxx_solr <http://xxxx_solr/>”
“State”:”active”
“Leader”:”true”},
“Core_node2”:{
“Core”:ORDER_shard1_replica1
“Base_url:
“Node_name”:”http://xxxx_solr <http://xxxx_solr/>”
“State”:”active”
“Leader”:”true”}
}
}
>
> From the document collection we get the slices and iterate each replica to
> show the cores in a admin page. But this page worked fine with the code in
> solr4, now with solr8 it throws error.
> Kindly help.
>
> Regards
> Reej
