On 8/20/2021 2:00 AM, Ravi Mishra wrote:
# My solr is working just fine I run few command to verify:
$ curl "http://0.0.0.0:8983/solr/admin/collections?action=clusterstatus&wt=xml";
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">0</int>
<int name="QTime">19</int>
</lst>
<lst name="cluster">
<lst name="collections"/>
<arr name="live_nodes">
<str>192.168.1.2:8983_solr</str>
</arr>
</lst>
</response>
This would indicate that Solr is running in cloud mode (connected to
ZooKeeper). This is a call to the Collections API, which only works in
cloud mode. If that URL path is attempted when you're not in cloud
mode, this is what Solr returns:|
|
|<response> <lst name="responseHeader"> <int name="status">400</int>
<int name="QTime">27</int> </lst> <lst name="error"> <lst
name="metadata"> <str
name="error-class">org.apache.solr.common.SolrException</str> <str
name="root-error-class">org.apache.solr.common.SolrException</str>
</lst> <str name="msg">Solr instance is not running in SolrCloud
mode.</str> <int name="code">400</int> </lst> </response>|
||
||
# When I tried to create core it was failing with below error, before
running this command I created folder name “a10” under solr home
directory “/var/solr/solr/cores”
$ curl
"http://0.0.0.0:8983/solr/admin/cores?action=CREATE&name=a10&instanceDir=cores/a10&shard=shard10&collection=conf1&coreNodeName=a10&wt=xml";
<?xml version="1.0" encoding="UTF-8"?>
<response>
<lst name="responseHeader">
<int name="status">400</int>
<int name="QTime">10067</int>
</lst>
<lst name="error">
<lst name="metadata">
<str name="error-class">org.apache.solr.common.SolrException</str>
<str
name="root-error-class">org.apache.solr.cloud.ZkController$NotInClusterStateException</str>
</lst>
<str name="msg">Error CREATEing SolrCore 'a10': coreNodeName a10 does
not exist in shard shard10, ignore the exception if the replica was
deleted</str>
<int name="code">400</int>
</lst>
</response>
The CoreAdmin API that you are using here should never be used when
you're in cloud mode. Even experts can't use it successfully. It is
not cloud-aware, so the necessary changes to the clusterstate before and
after creating a core will not be done, even if you somehow managed to
get a CoreAdmin API call to succeed. Use the collections API, not
CoreAdmin. One bonus to the Collections API: You do not need to create
directories before calling the API when you're in cloud mode. Solr will
create them for you.
Thanks,
Shawn
