tmp目录下隐藏文件

环境: CentOS 6.2

由于/tmp目录下只有一个g的容量,但发现有600M的空间被占用。在tmp目录下du -sm却只有不到10M的文件。最后发现是运行的应用程序写日志文件被删除了,

通过命令查看  lsof /tmp | grep deleted

解决方法,关闭相应的应用程序并记住不要轻易删除tmp目录下的文件。

spark处理广告数据中搜索词与bidword的大小写全角繁体问题

环境:spark 1.4.1, jpinyin-1.1.3.jar

spark-shell –executor-memory 10G –total-executor-cores 10 –jars ~/huangqiang/jpinyin-1.1.3.jar

import com.github.stuxuhai.jpinyin.ChineseHelper

val hiveCtx = new org.apache.spark.sql.hive.HiveContext(sc)

val hql1 = hiveCtx.sql(“select logdate, query, custid, groupid, bidword, quality, price from search_join_log where logdate <=’2016-01-07′ and logdate >= ‘2016-01-01′ and adtype=’2′ and adid > 0 and channel in(’16’,’40’,’51’,’52’,’78’,’80’,’72’,’73’,’81’)”)

def qj2Bj(str: String): String = {
var b = str.toCharArray
val c = b.map{i =>
if(i == ‘\\\\u3000’){
“”
}else if(i > ‘\\\\uFF00’ && i < ‘\\\\uFF5F’){
(i – 65248).toChar
}else{
i.toChar
}
}
return c.mkString
}

val norm_search_join_log = hql1.map{r =>
val q_bc = qj2Bj(r(1).toString.toLowerCase())
val b_bc = qj2Bj(r(4).toString.toLowerCase())
val q_sim = ChineseHelper.convertToSimplifiedChinese(q_bc)
val b_sim = ChineseHelper.convertToSimplifiedChinese(b_bc)
(r(0).toString, q_sim, r(2).toString, r(3).toString, b_sim, r(5).toString, r(6).toString)
}

 

 

librados: client.admin initialization error (2) No such file or directory

环境: Ubuntu 14.04, Ceph 0.80.10

在使用ceph或rados命令时(如:rados -p .rgw ls)发生只能加sudo才可以使用,不然就出现报错:

monclient(hunting): ERROR: missing keyring, cannot use cephx for authentication

librados: client.admin initialization error (2) No such file or directory

 

ls /etc/ceph/ceph.client.admin.keyring -l
-rw——- 1 root root 63 Jan 18 18:45 /etc/ceph/ceph.client.admin.keyring

查看文件的属性才发现只有root用户才可以读取文件ceph.client.admin.keyring。因而修改其权限以便其它用户也可以访问

sudo chmod o+r /etc/ceph/ceph.client.admin.keyring

hive使用postgresql启动问题No suitable driver found

环境:CentOS 6.4, hadoop 2.6, hive 1.1,postgresql 9.4

 

在启动hive的时候出现No suitable driver found for jdbc:postgres://xxx.xxx.xxx.xxx:5432/hive

依据提示是说postgresql jdbc包找不到,反复确认包是存在lib文件夹内。

最终发现hive-site.xml中的

<value>jdbc:postgres://xxx.xxx.xxx.xxx:5432/hive</value> 的问题。修改为

value>jdbc:postgresql://xxx.xxx.xxx.xx:5432/hive</value>即可

Micrsoft开源的lightLDA

环境:Ubuntu 14.04

git clone https://github.com/Microsoft/lightlda.git
cd lightlda/

vi build.sh
修改如下:
#git clone https://github.com:Microsoft/multiverso.git
git clone https://github.com/Microsoft/multiverso.git

sh build.sh

cd example

export LD_LIBRARY_PATH=~/lightlda/multiverso/third_party/lib:$LD_LIBRARY_PATH
sh nytimes.sh