Interrupted acquiring update model snapshot semaphore – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 8.7-8.9

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Briefly, this error occurs when Elasticsearch is unable to acquire a semaphore for updating the model snapshot due to an interruption. This could be due to high system load, slow network, or other resource contention issues. To resolve this, you can try increasing the system resources, optimizing your Elasticsearch queries, or increasing the timeout settings. Additionally, ensure that there are no network issues that could be causing interruptions. If the problem persists, consider reviewing your cluster’s health and configuration.

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

Log Context

Log “[{}] Interrupted acquiring update model snapshot semaphore” classname is AutodetectResultProcessor.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            // there are 2 model snapshots queued up. But it also has the
            // advantage of ensuring order
            updateModelSnapshotSemaphore.acquire();
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            logger.info("[{}] Interrupted acquiring update model snapshot semaphore"; jobId);
            return;
        }

        executeAsyncWithOrigin(client; ML_ORIGIN; UpdateJobAction.INSTANCE; updateRequest; new ActionListener() {
            @Override

 

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