Interrupted while launching normalizer – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.14-8.9

Briefly, this error occurs when Elasticsearch encounters an interruption while launching a normalizer, which is used to normalize text into a standard form. This could be due to a variety of reasons such as insufficient resources, a bug in the software, or an unexpected interruption. To resolve this issue, you could try restarting Elasticsearch, ensuring that there are sufficient resources available, or updating Elasticsearch to the latest version to fix any potential bugs. If the error persists, you may need to debug the normalizer to identify the cause of the interruption.

This guide will help you check for common problems that cause the log ” [{}] Interrupted while launching normalizer ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “[{}] Interrupted while launching normalizer” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            List command = new NormalizerBuilder(env; jobId; quantilesState; bucketSpan).build();
        } catch (InterruptedException e) {
            logger.warn("[{}] Interrupted while launching normalizer"; jobId);
        } catch (IOException e) {
            String msg = "[" + jobId + "] Failed to launch normalizer";
            throw ExceptionsHelper.serverError(msg + " on [" + nodeName + "]"; e);


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