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Troubleshooting background
To troubleshoot Elasticsearch log “Error closing netty event loop group” it’s important to know common problems related to Elasticsearch concepts: netty. See below-detailed explanations complete with common problems, examples and useful tips.
Related issues to this log
To help troubleshoot related issues we have gathered selected Q&A from the community and issues from Github , please review the following for further information :
1. Tty4 Unexpected Exception In The Se
Log Context
Log ”Error closing netty event loop group” classname is Netty4Transport.java
We have extracted the following from Elasticsearch source code to get an in-depth context :
<pre class="wp-block-syntaxhighlighter-code"> protected void stopInternal() {
Releasables.close(() -> {
Future<?> shutdownFuture = eventLoopGroup.shutdownGracefully(0; 5; TimeUnit.SECONDS);
shutdownFuture.awaitUninterruptibly();
if (shutdownFuture.isSuccess() == false) {
logger.warn("Error closing netty event loop group"; shutdownFuture.cause());
}
serverBootstraps.clear();
clientBootstrap = null;
});
</pre>
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