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Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

albertogviana

Safest way to clean up boot partition - Ubuntu 14.04LTS-x64

Reference

Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 

albertogviana

import org.apache.mina.filter.ssl.SslFilter;
import org.apache.mina.transport.socket.nio.NioSocketConnector;


public class TunnelClient{
    .......
    NioSocketConnector nioConnector = new NioSocketConnector(1);
    nioConnector.setDefaultRemoteAddress(tunnelServerAddress);
    nioConnector.setHandler(handler);
    SslFilter sslFilter = new SslFilter(getSSLContext());			

albertogviana

// Package main
// Copyright 2017 Kranz. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
/**
	Test read file by chunks

	➜  read ll
	total 13241936
	drwxr-xr-x  5 rlopes  staff   170B 16 Jan 01:19 ./