Failed to invoke before shard post recovery callback – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 2.3-2.3

Briefly, this error occurs when Elasticsearch encounters an issue while trying to execute a callback function before the shard post-recovery process. This could be due to a variety of reasons such as a network issue, a problem with the shard data, or a bug in the Elasticsearch software. To resolve this issue, you could try restarting the Elasticsearch node, checking the network connectivity, or verifying the integrity of the shard data. If the problem persists, consider updating or reinstalling Elasticsearch to ensure there are no software bugs.

This guide will help you check for common problems that cause the log ” {} failed to invoke before shard post recovery callback ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: indices, recovery and shard.

Log Context

Log “{} failed to invoke before shard post recovery callback” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

     public void beforeIndexShardPostRecovery(IndexShard indexShard) {
        for (Listener listener : listeners) {
            try {
            } catch (Throwable t) {
                logger.warn("{} failed to invoke before shard post recovery callback"; t; indexShard.shardId());
                throw t;


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