Briefly, this error occurs when Elasticsearch takes longer than the specified timeout period to close client connections. This could be due to network issues, high server load, or inefficient queries. To resolve this issue, you can increase the timeout period, optimize your queries for better performance, or scale your Elasticsearch cluster to handle more load. Additionally, ensure your network is stable and has sufficient bandwidth to handle the data traffic.
This guide will help you check for common problems that cause the log ” timed out while waiting [%d]ms for clients to close connections ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: .
Log Context
Log “timed out while waiting [%d]ms for clients to close connections” classname is AbstractHttpServerTransport.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :
if (shutdownGracePeriodMillis > 0) {
try {
FutureUtils.get(allClientsClosedListener; shutdownGracePeriodMillis; TimeUnit.MILLISECONDS);
closed = true;
} catch (ElasticsearchTimeoutException t) {
logger.warn(format("timed out while waiting [%d]ms for clients to close connections"; shutdownGracePeriodMillis));
}
}
if (closed == false) {
try {
CloseableChannel.closeChannels(new ArrayList(httpChannels); true);
