Hi All, After I restarted my Solr and Zookeeper server. The Solr node kept copying Config Set to non existed Solr collection.
2019-12-11 08:09:25.201 INFO (OverseerThreadFactory-9-thread-134-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/stopwords_tr.txt to /configs/d957c8e74e71/lang/stopwords_tr.txt 2019-12-11 08:09:25.206 INFO (OverseerThreadFactory-9-thread-135-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/stopwords_tr.txt to /configs/726766cd4c93/lang/stopwords_tr.txt 2019-12-11 08:09:25.217 INFO (OverseerThreadFactory-9-thread-134-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/stopwords_ar.txt to /configs/d957c8e74e71/lang/stopwords_ar.txt 2019-12-11 08:09:25.217 INFO (OverseerThreadFactory-9-thread-135-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/stopwords_ar.txt to /configs/726766cd4c93/lang/stopwords_ar.txt 2019-12-11 08:09:25.225 INFO (OverseerThreadFactory-9-thread-134-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/userdict_ja.txt to /configs/d957c8e74e71/lang/userdict_ja.txt 2019-12-11 08:09:25.225 INFO (OverseerThreadFactory-9-thread-135-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/userdict_ja.txt to /configs/726766cd4c93/lang/userdict_ja.txt 2019-12-11 08:09:25.235 INFO (OverseerThreadFactory-9-thread-134-processing-n:10.9.57.213:8983_solr) [ ] o.a.s.c.c.ZkConfigManager Copying zk node /configs/_data/lang/stopwords_eu.txt to /configs/d957c8e74e71/lang/stopwords_eu.txt As shown in the log, my ConfigSet template is saved in /configs/_data on Zookeeper, when one collection is created, the template will be copied to /configs/$collectionID on Zookeeper and a Zookeeper node /collections/$collectionId will be created for the collection. However, there is no collection ' d957c8e74e71' registered in Zookeeper, neither there is index file on Solr host. I wonder where Solr get the collection id? and What's the logic of this behavior? I have checked that there is no one was creating Solr collection during the same period. Thanks, Ming