Operations only allowed when shard state is one of – How to solve this Elasticsearch error

Opster Team

July-20, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” operations only allowed when shard state is one of ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: shard and index.


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Log Context

Log “operations only allowed when shard state is one of”classname  is IndexShard.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

} 
 public void readAllowed() throws IllegalIndexShardStateException {
 IndexShardState state = this.state; // one time volatile read
 if (readAllowedStates.contains(state) == false) {
 throw new IllegalIndexShardStateException(shardId; state; "operations only allowed when shard state is one of " +
 readAllowedStates.toString());
 }
 } 
 /** returns true if the {@link IndexShardState} allows reading */

 

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