Before you begin reading this guide, we recommend you run Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many 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 ” Exception thrown by listener while notifying on ack timeout ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: cluster and master.
Log Context
Log “Exception thrown by listener while notifying on ack timeout” classname is MasterService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
Override
public void onAckTimeout() {
try (ThreadContext.StoredContext ignore = context.get()) {
listener.onAckTimeout();
} catch (Exception e) {
logger.error("exception thrown by listener while notifying on ack timeout"; e);
}
}
Override
public TimeValue ackTimeout() {
