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来自：http://centoshowtos.org/hadoop/fix-corrupt-blocks-on-hdfs/ How do I know if my hadoop hdfs filesystem has corrupt blocks, and how do I fix it? The 阅读全文
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来自：http://stackoverflow.com/questions/510632/whats-the-difference-between-concurrenthashmap-and-collections-synchronizedmap http://javarevisited.blogs 阅读全文
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来自：http://stackoverflow.com/questions/11257509/urldecoder-illegal-hex-characters-in-escape-pattern-for-input-string-p Whoever created the URL should h 阅读全文
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来自：http://stackoverflow.com/questions/26892389/org-apache-spark-sparkexception-job-aborted-due-to-stage-failure-task-from-app SparkConf conf = new Spa 阅读全文
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来自：http://www.hivemq.com/blog/mqtt-essentials-part-6-mqtt-quality-of-service-levels Quality of Service What is Quality of Service? The Quality of Serv 阅读全文
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来自：https://dzone.com/refcardz/getting-started-with-mqtt SECTION 1 Why MQTT? The Internet of Things (IoT) has recently gained massive traction. IoT cha 阅读全文
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http://hbase.apache.org/book/configuration.html#basic.prerequisitesHBase-0.94.xHBase-0.98.x (Support for Hadoop 1.1+ is deprecated.)HBase-1.0.x (Hadoo... 阅读全文
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理解TIME_WAIThttp://www.firefoxbug.com/index.php/archives/2795/理解TIME_WAIT(2)http://www.firefoxbug.com/index.php/archives/2796/ 阅读全文
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在客户端可以用telnet命令telnet ip port再输入info返回如下信息：每个参数的含义：redis_version redis版本gcc_version gcc版本process_id Redis 服务器进程i... 阅读全文
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Scala：/** * Created by sunxu on 2015/9/30. */import scala.sys.process._import java.io.File//在相应目录执行shell命令，返回值赋值给变量val exitValue = Process("hadoop jar... 阅读全文