Mucking around with ZooKeeper and Netty 4

ZooKeeper using Netty4 with a common netty worker pool...
Would be trivial to switch it to use the Netty 4 epoll implementation.

Now... To continue what I started hacking on ...

0 [main] INFO org.apache.zookeeper.server.ZooKeeperServer  - Server environment:zookeeper.version=3.4.6-1569965, built on 02/20/2014 09:09 GMT

...

39 [main] INFO org.apache.zookeeper.server.ZooKeeperServer  - Created server with tickTime 3000 minSessionTimeout 6000 maxSessionTimeout 60000 datadir /var/folders/4l/kmd0x0_x0q587n81vrrfjks40000z9/T/org.xiphis.zookeeper.TestZookeeper/zksnap/version-2 snapdir /var/folders/4l/kmd0x0_x0q587n81vrrfjks40000z9/T/org.xiphis.zookeeper.TestZookeeper/zklog/version-2

54 [main] DEBUG io.netty.util.internal.logging.InternalLoggerFactory  - Using SLF4J as the default logging framework

60 [main] DEBUG io.netty.util.internal.PlatformDependent0  - java.nio.Buffer.address: available

61 [main] DEBUG io.netty.util.internal.PlatformDependent0  - sun.misc.Unsafe.theUnsafe: available

61 [main] DEBUG io.netty.util.internal.PlatformDependent0  - sun.misc.Unsafe.copyMemory: available

62 [main] DEBUG io.netty.util.internal.PlatformDependent0  - java.nio.Bits.unaligned: true

64 [main] DEBUG io.netty.util.internal.PlatformDependent  - Java version: 8

65 [main] DEBUG io.netty.util.internal.PlatformDependent  - -Dio.netty.noUnsafe: false

65 [main] DEBUG io.netty.util.internal.PlatformDependent  - sun.misc.Unsafe: available

66 [main] DEBUG io.netty.util.internal.PlatformDependent  - -Dio.netty.noJavassist: false

68 [main] DEBUG io.netty.util.internal.PlatformDependent  - Javassist: unavailable

68 [main] DEBUG io.netty.util.internal.PlatformDependent  - You don't have Javassist in your class path or you don't have enough permission to load dynamically generated classes.  Please check the configuration for better performance.

69 [main] DEBUG io.netty.util.internal.PlatformDependent  - -Dio.netty.tmpdir: /var/folders/4l/kmd0x0_x0q587n81vrrfjks40000z9/T (java.io.tmpdir)

69 [main] DEBUG io.netty.util.internal.PlatformDependent  - -Dio.netty.bitMode: 64 (sun.arch.data.model)

69 [main] DEBUG io.netty.util.internal.PlatformDependent  - -Dio.netty.noPreferDirect: false

111 [main] DEBUG io.netty.channel.MultithreadEventLoopGroup  - -Dio.netty.eventLoopThreads: 8

172 [main] DEBUG io.netty.channel.nio.NioEventLoop  - -Dio.netty.noKeySetOptimization: false

172 [main] DEBUG io.netty.channel.nio.NioEventLoop  - -Dio.netty.selectorAutoRebuildThreshold: 512

208 [main] INFO org.apache.zookeeper.server.Netty4ServerCnxnFactory  - binding to port 0.0.0.0/0.0.0.0:62326

236 [main] DEBUG io.netty.util.internal.ThreadLocalRandom  - -Dio.netty.initialSeedUniquifier: 0x1216b72d21d3cb0f (took 13 ms)

278 [main] DEBUG io.netty.buffer.ByteBufUtil  - -Dio.netty.allocator.type: unpooled

278 [main] DEBUG io.netty.buffer.ByteBufUtil  - -Dio.netty.threadLocalDirectBufferSize: 65536

282 [main] DEBUG io.netty.util.NetUtil  - Loopback interface: lo0 (lo0, 0:0:0:0:0:0:0:1)

282 [main] DEBUG io.netty.util.NetUtil  - /proc/sys/net/core/somaxconn: 128 (non-existent)

Global Internet Access

There appears to be a rash of billionaires announcing support for the idea of a global satellite-based internet service, for example: http://www.extremetech.com/extreme/197711-elon-musk-unveils-new-plan-to-circle-to-earth-in-satellites-for-fast-low-latency-internet

I would wager that if we have had good affordable internet in our first-world abodes, the wealthy would not be so inclined to think of such schemes. Like as like not, for a new third-party to compete on the ground is practically impossible due to legal red tape and so the space option becomes the most practical, in spite of being a bit inefficient. It's easy to imagine the Elon Musks of the world venting frustration about lack of coverage or simply being unable to cancel Comcast without losing sanity...

Of course, when the time comes, the legacy telcos will complain about unfair competition from these upstarts and will campaign for government hand-outs to help modernise their networks; something which they should already be doing instead of accumulating profit and giving the money to their directors and shareholders.

It will be curious to see what happens. Ideally, the telcos will see the light; otherwise, I won't lose any sleep as their networks decay into obsolescence.