Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.
Try OpsGPT now for step-by-step guidance and tailored insights into your Elasticsearch operation.
Briefly, this error occurs when Elasticsearch is unable to send a message through a specific channel due to network issues, a closed channel, or a node failure. To resolve this issue, you can check the network connectivity between the nodes, ensure the channel is open, or verify the health of the node. If the problem persists, consider restarting the Elasticsearch cluster or increasing the timeout settings.
For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.
This guide will help you check for common problems that cause the log ” send message failed [channel: {}]: {} ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “send message failed [channel: {}]: {}” classname is OutboundHandler.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
public void onFailure(Exception e) {
final Level closeConnectionExceptionLevel = NetworkExceptionHelper.getCloseConnectionExceptionLevel(e; rstOnClose);
if (closeConnectionExceptionLevel == Level.OFF) {
logger.warn(() -> "send message failed [channel: " + channel + "]"; e);
} else if (closeConnectionExceptionLevel == Level.INFO && logger.isDebugEnabled() == false) {
logger.info("send message failed [channel: {}]: {}"; channel; e.getMessage());
} else {
logger.log(closeConnectionExceptionLevel; () -> "send message failed [channel: " + channel + "]"; e);
}
listener.onFailure(e);
maybeLogSlowMessage(false);
