Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.
To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.
This guide will help you check for common problems that cause the log ” operation was cancelled reason ” + reason + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “operation was cancelled reason [” + reason + “]”classname is CancellableThreads.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
if (onCancel != null) {
onCancel.onCancel(reason; beforeCancelException);
}
// fallback to the default exception
final RuntimeException cancelExp = new ExecutionCancelledException("operation was cancelled reason [" + reason + "]");
if (beforeCancelException != null) {
cancelExp.addSuppressed(beforeCancelException);
}
throw cancelExp;
}
