Briefly, this error occurs when Elasticsearch’s internal service, the Watcher, encounters an issue and needs to shut down. This could be due to a variety of reasons such as memory issues, configuration errors, or network problems. To resolve this, you could try restarting Elasticsearch, checking for any configuration errors in the Watcher settings, or investigating for any network connectivity issues. If the problem persists, consider increasing the memory allocation for Elasticsearch or updating to the latest version.
This guide will help you check for common problems that cause the log ” shutting down watcher thread with exception ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: thread.
Log Context
Log “shutting down watcher thread with exception” classname is AbstractFileWatchingService.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
}
}
} catch (ClosedWatchServiceException | InterruptedException expected) {
logger.info("shutting down watcher thread");
} catch (Exception e) {
logger.error("shutting down watcher thread with exception"; e);
}
}
final synchronized void stopWatcher() {
if (watching()) {
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