Phase failed – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch encounters an issue during a specific phase of its operation, such as indexing, searching, or data recovery. The error could be due to a variety of reasons such as insufficient disk space, network connectivity issues, or configuration errors. To resolve this, you can check the Elasticsearch logs for more detailed error messages, ensure there’s enough disk space, verify network connectivity, and review your configuration settings. If the error occurs during a recovery phase, you might need to consider restoring from a backup.

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

Log Context

Log “Phase failed” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } catch (Exception e) {
 // we need to fail the entire request here - the entire phase just blew up
 // don't call onShardFailure or onFailure here since otherwise we'd countDown the counter
 // again which would result in an exception
 new SearchPhaseExecutionException(phase.getName(); "Phase failed"; e; ShardSearchFailure.EMPTY_ARRAY)


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?