Failed to properly close watcher bulk processor – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.

Briefly, this error occurs when Elasticsearch is unable to close the watcher bulk processor correctly. This could be due to a variety of reasons such as a network issue, a heavy load on the cluster, or a sudden shutdown. To resolve this issue, you can try restarting the Elasticsearch service, ensuring that the cluster is not overloaded, and checking the network connectivity. If the problem persists, consider increasing the timeout settings or optimizing your indexing strategy to reduce the load on the Elasticsearch cluster.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” failed to properly close watcher bulk processor ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin, bulk.

Log Context

Log “failed to properly close watcher bulk processor” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

    public void close() throws IOException {
        try {
            if (enabled && bulkProcessor.awaitClose(10; TimeUnit.SECONDS) == false) {
                logger.warn("failed to properly close watcher bulk processor");
        } catch (InterruptedException e) {


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?