遇到问题，我无法在solrcloud中复制。似乎是随机发生的。
Underlying file changed by an external force at 2018-09-18T14:55:22Z, (lock=NativeFSLock(path=/path/to/my/shard/index/write.lock,impl=sun.nio.ch.FileLockImpl[0:9223372036854775807 exclusive valid],creationTime=2018-09-18T14:55:22.006973Z)) Caused by: org.apache.lucene.store.AlreadyClosedException: Underlying file changed by an external force at 2018-09-18T14:55:21Z,
索引是无模式的，通常会接收许多同时更新。
通常以以下内容开头：（在发生write.lock错误之前按此顺序）
Error from server at server3/solr/myshard: Bad Request
Remote error message: Exception writing document id bc04df6e-f29f-4091-ad73-f708a97d28b4 to the index; possible analysis error.
3 Async exceptions during distributed update:
Remote error message: this IndexWriter is closed
有没有办法从关闭索引编制器中自我恢复？发生错误后，不能再将其他文档写入集合中。我现在唯一的解决方案是删除write.lock并重新启动solr或完全重新创建集合。