Failed to flush export bulks – How to solve this Elasticsearch error

Failed to flush export bulks – How to solve this Elasticsearch error

Opster Team

February-21, Version: 1.7-8.0

To understand why Elasticsearch failed to flush export bulks and resolve the issue, we recommend you run the Elasticsearch Error Check-Up. The Check-Up will analyze your cluster and provide you with actionable recommendations to resolve and prevent this issue and many others.

This guide will help you check for common problems that cause the log “failed to flush export bulks” to appear. It’s important to understand the related issues related, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: flush and plugin.

Log Context

Log”failed to flush export bulks”classname  is ExportBulk.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

final BiConsumer> bulkBiConsumer = (exportBulk; iteratingListener) -> {
  // for every export bulk we flush and pass back the response; which should always be
  // null. When we have an exception; we wrap the first and then add suppressed exceptions
  exportBulk.flush(ActionListener.wrap(iteratingListener::onResponse; e -> {
  if (exceptionRef.get() == null) {
  exceptionRef.set(new ExportException("failed to flush export bulks"; e));
  } else if (e instanceof ExportException) {
  exceptionRef.get().addExportException((ExportException) e);
  } else {
  exceptionRef.get().addSuppressed(e);
  }

Run the Check-Up to get customized recommendations like this:

error

Heavy merges detected in specific nodes

error-img

Description

A large number of small shards can slow down searches and cause cluster instability. Some indices have shards that are too small…

error-img

Recommendations Based on your specific ES deployment you should…

Based on your specific ES deployment you should…

1

X-PUT curl -H [a customized recommendation]

 

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