Timed out waiting for – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

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Briefly, this error occurs when Elasticsearch takes longer than the set timeout period to complete a task. This could be due to heavy indexing, slow network, or insufficient resources. To resolve this, you can increase the timeout limit, optimize your queries for better performance, or scale up your Elasticsearch cluster to handle more load. Additionally, ensure your hardware resources (CPU, memory, disk I/O) are sufficient and not over-utilized.

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This guide will help you check for common problems that cause the log ” timed out waiting for ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “timed out waiting for” class name is LdapRealm.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 void maybeTimeout() {
 if (state.compareAndSet(LdapRunnableState.AWAITING_EXECUTION; LdapRunnableState.TIMED_OUT)) {
 logger.warn("skipping execution of ldap runnable as it has been waiting for " +
 "execution too long");
 listener.onFailure(new ElasticsearchTimeoutException("timed out waiting for " +
 "execution of ldap runnable"));
 }  enum LdapRunnableState {


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