Log Failed to clear scroll – How To Solve Related Issues

Log Failed to clear scroll – How To Solve Related Issues

Opster Team

Feb-20, Version: 1.7-8.0


Before you read this guide, we recommend you run the Elasticsearch Error Check-Up which detects issues in ES that cause log errors. It’s a free tool that requires no installation and takes 2 minutes to complete.

This guide will help you check for common problems that cause the log ” Failed to clear scroll ” to appear. It’s important to understand the issues related to the log, so to get started, read the general overview on common issues and tips related to the Elasticsearch concepts: bulk, index, reindex and scroll.

Advanced users might want to skip right to the common problems section in each concept or try running the Check-Up which analyses ES to pinpoint the cause of many errors and provides suitable actionable recommendations how to resolve them. Among the dozens of checks included are: shards sizes, thread pools, management queue size, search errors, circuit breakers and many more (join over 700 users who use this free tool).

Log Context

Log “Failed to clear scroll [” classname is AbstractAsyncBulkByScrollAction.java
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                     logger.debug("Freed [{}] contexts"; response.getNumFreed());

                public void onFailure(Throwable e) {
                    logger.warn("Failed to clear scroll [" + scrollId + ']'; e);
        if (failure == null) {

Related issues to this log

We have gathered selected Q&A from the community and issues from Github, that can help fix related issues please review the following for further information :

1 Why does this ElasticSearch scan and scroll keep returning the same scroll id? -views 9.29 K ,score 22

2 Github Issue Number 22937

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