查看硬盘:
# fdisk -l
...
Disk /dev/sdb: 274.9 GB, 274877906944 bytes
255 heads, 63 sectors/track, 33418 cylinders, total 536870912 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
| 王 | |
| 江 | |
| 周 | |
| 胡 | |
| 刘 | |
| 李 | |
| 吴 | |
| 毛 | |
| 温 | |
| 习 |
| git branch -m old_branch new_branch # Rename branch locally | |
| git push origin :old_branch # Delete the old branch | |
| git push --set-upstream origin new_branch # Push the new branch, set local branch to track the new remote |
I hereby claim:
To claim this, I am signing this object:
| package com.cmcm.bdp | |
| import java.io.FileInputStream | |
| import java.net.InetAddress | |
| import com.databricks.spark.avro._ | |
| import com.maxmind.geoip2.DatabaseReader | |
| import org.apache.spark._ | |
| import org.apache.spark.sql.{DataFrame, Row} | |
| import org.apache.spark.sql.expressions.Window |
| import java.util.concurrent.locks.ReentrantLock; | |
| public class MyConcurrentHashMap<K,V> { | |
| private static final int DEFAULT_CONCURRENCY_LEVEL = 16; | |
| /** | |
| * The default initial capacity - MUST be a power of two. | |
| */ | |
| static final int DEFAULT_INITIAL_CAPACITY = 256; |
| import java.util.concurrent.locks.Condition; | |
| import java.util.concurrent.locks.ReentrantLock; | |
| // Reference: http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/locks/Condition.html | |
| public class MyArrayBlockingQueue<E> { | |
| final ReentrantLock lock = new ReentrantLock(); | |
| final Condition notFull = lock.newCondition(); | |
| final Condition notEmpty = lock.newCondition(); | |
| final Object[] items; |
| package me.soulmachine; | |
| import org.apache.hadoop.conf.Configuration; | |
| import org.apache.hadoop.conf.Configured; | |
| import org.apache.hadoop.fs.Path; | |
| import org.apache.hadoop.io.LongWritable; | |
| import org.apache.hadoop.io.Text; | |
| import org.apache.hadoop.mapreduce.Job; | |
| import org.apache.hadoop.mapreduce.Mapper; | |
| import org.apache.hadoop.mapreduce.Reducer; |
| package me.soulmachine; | |
| import org.apache.hadoop.conf.Configuration; | |
| import org.apache.hadoop.conf.Configured; | |
| import org.apache.hadoop.fs.Path; | |
| import org.apache.hadoop.io.IntWritable; | |
| import org.apache.hadoop.io.LongWritable; | |
| import org.apache.hadoop.io.Text; | |
| import org.apache.hadoop.mapreduce.Job; | |
| import org.apache.hadoop.mapreduce.Mapper; |
| package com.yanjiuyanjiu.weibo | |
| import org.apache.spark.SparkContext._ | |
| import org.apache.spark.{SparkContext, Logging} | |
| /** | |
| * 查找互相关注的关系。 | |
| * | |
| * 输入为一个文本文件,每行的格式为 userId1, userId2, userId3,..., userIdN,表示 userId1 关注了 userId2, userId3, ..., userIdN |