[SOLR-5580] SOLR-5311 was done without full understanding of the system and must be reverted.

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.6
• Fix Version/s: 4.6.1, 4.7, 6.0
• Labels: core

Environment

OS:Red Hat Enterprise Linux Server release 6.4 (Santiago)
Software:solr 4.6,
jdk:OpenJDK Runtime Environment (rhel-2.3.4.1.el6_3-x86_64)
OpenJDK 64-Bit Server VM (build 23.2-b09, mixed mode)

• Assignee: Mark Miller
• Reporter: YouPeng Yang
• Created: 27/Dec/13 07:29
• Updated: 09/May/16 18:47
• Resolved: 30/Dec/13 14:55

Description

In class org.apache.solr.cloud.Overseer the Line 360:
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if (sliceName !=null && collectionExists && !"true".equals(state.getCollection(collection).getStr("autoCreated"))) {
Slice slice = state.getSlice(collection, sliceName);
if (slice.getReplica(coreNodeName) == null)

{ log.info("core_deleted . Just return"); return state; }
}
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the slice needs to be checked null .because when create a new core with both explicite shard and coreNodeName, the state.getSlice(collection, sliceName) may return a null.So it needs to be checked ,or there will be an NullpointException
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if (sliceName !=null && collectionExists && !"true".equals(state.getCollection(collection).getStr("autoCreated"))) {
Slice slice = state.getSlice(collection, sliceName);
if (slice != null && slice.getReplica(coreNodeName) == null) { log.info("core_deleted . Just return"); return state; }

}
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Issue Links

• relates to: SOLR-5609 Don't let cores create slices/named replicas
• relates to: SOLR-5311 Avoid registering replicas which are removed