Failed to kill upgrade process for model snapshot – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.17-8.3

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Briefly, this error occurs when Elasticsearch is unable to terminate the upgrade process for a model snapshot. This could be due to insufficient permissions, a locked resource, or a system error. To resolve this issue, you can try the following: 1) Check and adjust the user permissions to ensure the process can be killed. 2) Identify and unlock the resource that might be causing the issue. 3) Restart the Elasticsearch service to clear potential system errors. 4) If the problem persists, consider rolling back the upgrade and re-attempting it.

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

Log Context

Log “[{}] failed to kill upgrade process for model snapshot [{}]” classname is JobModelSnapshotUpgrader.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                }
                process.kill(true);
                process = null;
                processor = null;
            } catch (IOException e) {
                logger.error(new ParameterizedMessage("[{}] failed to kill upgrade process for model snapshot [{}]"; jobId; snapshotId); e);
            }
        } else {
            logger.warn("[{}] attempt to kill upgrade process for model snapshot [{}] when no such process exists"; jobId; snapshotId);
        }
    }

 

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