我在solrCloud模式下使用solr 4.10.3。我有一个碎片和3个副本。正在使用外部动物园管理员合奏。我的文档在一个索引中增加太多了。现在，我想创建更多的碎片。我尝试使用
http://localhost:8983/solr/admin/collections?action=SPLITSHARD&collection=collection1&shard=shard1
但是它给出以下错误
Error executing split operation for collection: collection1 parent shard: shard1
java.lang.NullPointerException
at org.apache.solr.cloud.OverseerCollectionProcessor.splitShard(OverseerCollectionProcessor.java:1288)
at org.apache.solr.cloud.OverseerCollectionProcessor.processMessage(OverseerCollectionProcessor.java:563)
at org.apache.solr.cloud.OverseerCollectionProcessor$Runner.run(OverseerCollectionProcessor.java:2629)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Collection: collection1 operation: splitshard failed:org.apache.solr.common.SolrException
at org.apache.solr.cloud.OverseerCollectionProcessor.splitShard(OverseerCollectionProcessor.java:1569)
at org.apache.solr.cloud.OverseerCollectionProcessor.processMessage(OverseerCollectionProcessor.java:563)
at org.apache.solr.cloud.OverseerCollectionProcessor$Runner.run(OverseerCollectionProcessor.java:2629)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
at org.apache.solr.cloud.OverseerCollectionProcessor.splitShard(OverseerCollectionProcessor.java:1288)
null:org.apache.solr.common.SolrException
null:org.apache.solr.common.SolrException
at org.apache.solr.handler.admin.CollectionsHandler.handleResponse(CollectionsHandler.java:364)
at org.apache.solr.handler.admin.CollectionsHandler.handleSplitShardAction(CollectionsHandler.java:606)
at org.apache.solr.handler.admin.CollectionsHandler.handleRequestBody(CollectionsHandler.java:172)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:135)
问题在哪里，它的灵魂在哪里？
最佳答案
只有在首次启动集群时定义了-DnumShards =（某个值）时，才可以使用属性SPLITSHARD。