Nathan Neulinger created SOLR-5638:
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Summary: Collection creation partially works, but results in
unusable configuration due to missing config in ZK
Key: SOLR-5638
URL: https://issues.apache.org/jira/browse/SOLR-5638
Project: Solr
Issue Type: Bug
Components: SolrCloud
Affects Versions: 4.6
Reporter: Nathan Neulinger
Need help properly recovering from 'collection gets created without config
being defined'.
Right now, if you submit a collection create and the config is missing, it will
proceed with partially creating cores, but then the cores fail to load.
This requires manual intervention on the server to fix unless you pick a new
colllection name:
What's worse - if you retry the create a second time, it will usually try to
create the replicas in the opposite order, resulting in TWO broken cores on
each box, one for each attempted replica.
beta1-newarch_hive1_v12_shard1_replica1:
org.apache.solr.common.cloud.ZooKeeperException:org.apache.solr.common.cloud.ZooKeeperException:
Specified config does not exist in ZooKeeper:hivepoint-unknown
beta1-newarch_hive1_v12_shard1_replica2:
org.apache.solr.common.cloud.ZooKeeperException:org.apache.solr.common.cloud.ZooKeeperException:
Specified config does not exist in ZooKeeper:hivepoint-unknown
I already know how to clear this up manually, but this is something where solr
is allowing a condition in external service to result in a corrupted/partial
configuration.
I can see an easy option for resolving this as a workaround - allow a
collection CREATE operation to specify "reuseCores" - i.e. allow it to use an
existing core of the proper name if it already exists.
Right now you wind up getting:
org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error
CREATEing SolrCore 'beta1-newarch_hive1_v12_shard1_replica1': Could not create
a new core in solr/beta1-newarch_hive1_v12_shard1_replica1/as another core is
already defined there
org.apache.solr.client.solrj.impl.HttpSolrServer$RemoteSolrException:Error
CREATEing SolrCore 'beta1-newarch_hive1_v12_shard1_replica2': Could not create
a new core in solr/beta1-newarch_hive1_v12_shard1_replica2/as another core is
already defined there
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