SEVERE UpdateLog Error inspecting tlog tlog in Solr -

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i using solr cloud 2 nodes in production. solr stopped accepting writes , error in master node.

severe  updatelog   error inspecting tlog tlog{file=/var/lib/solr/core_0/data/tlog/tlog.0000000000001264986 refcount=2} warning     solrcore    [core_1] performance warning: overlapping ondecksearchers=2 severe  solrcmddistributor  forwarding update http://solr02:8983/solr/core_1/ failed - retrying ... severe  solrcore    java.lang.stringindexoutofboundsexception: string index out of range: -1

check tlogs, when don't commit long time tlogs become huge, need commit free them, maybe add documents softcommit true, or maybe autocommit & autosoftcommit config values aren't in case. these links can understand more :

http://lucidworks.com/blog/understanding-transaction-logs-softcommit-and-commit-in-sorlcloud/

solr autocommit vs autosoftcommit


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