Failed to execute bulk request – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when Elasticsearch is unable to process a bulk request due to reasons like insufficient memory, incorrect data format, or exceeding the index limit. To resolve this, you can increase the JVM heap size to provide more memory, ensure your data is in the correct format before sending the bulk request, or split your bulk request into smaller parts to avoid exceeding the index limit. Also, check for any underlying server issues that might be causing the failure.

This guide will help you check for common problems that cause the log ” Failed to execute bulk request {}. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request, bulk.

Log Context

Log “Failed to execute bulk request {}.” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        } catch (InterruptedException e) {
   -> new ParameterizedMessage("Bulk request {} has been cancelled."; executionId); e);
            listener.afterBulk(executionId; bulkRequest; e);
        } catch (Exception e) {
            logger.warn(() -> new ParameterizedMessage("Failed to execute bulk request {}."; executionId); e);
            listener.afterBulk(executionId; bulkRequest; e);
        } finally {
            if (bulkRequestSetupSuccessful == false) {  // if we fail on client.bulk() release the semaphore


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