Failed to clear scroll – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which can resolve issues that cause many errors.

This guide will help you check for common problems that cause the log ” Failed to clear scroll ” to appear. To understand the issues related to this log, read the explanation below about the following 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 to analyze Elasticsearch configuration and help resolve this error.

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());
                }

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



 

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