Failed to invoke after shard closed callback – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch tries to execute a callback function after a shard has been closed, but fails. This could be due to a variety of reasons such as a network issue, a bug in the code, or a resource constraint. To resolve this issue, you could try restarting the Elasticsearch node, checking for any network issues, or reviewing the code for potential bugs. Additionally, ensure that your system has sufficient resources to handle the operations.

This guide will help you check for common problems that cause the log ” [{}] failed to invoke after shard closed callback ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index, shard.

Log Context

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

    public void afterIndexShardClosed(ShardId shardId; @Nullable IndexShard indexShard; Settings indexSettings) {
        for (IndexEventListener listener : listeners) {
            try {
                listener.afterIndexShardClosed(shardId; indexShard; indexSettings);
            } catch (Exception e) {
                logger.warn(() -> new ParameterizedMessage("[{}] failed to invoke after shard closed callback"; shardId.getId()); e);
                throw e;


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