leibnitz
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jpsb：
...
为什么需要分布式？ -
leibnitz：
hi guy, this is used as develo ...
compile hadoop-2.5.x on OS X(macbook) -
string2020：
撸主真土豪,在苹果里面玩大数据.
compile hadoop-2.5.x on OS X(macbook) -
youngliu_liu：
怎样运行这个脚本啊？？大牛，我刚进入搜索引擎行业，希望你能不吝 ...
nutch 数据增量更新 -
leibnitz：
also, there is a similar bug ...
２。hbase CRUD--Lease in hbase
文章列表
as mentioned in title,i will make analytics between two tomcats which both running a solr app.
1.cases comparison
2.analytics
1.cases comparison
tomcat
Xms
Xmx
Xmn
NewRatio
SurvivorRatio
mem used by
checking 'top-RES' item
resulted: actual new size
A
6g
8g
1 ...
a abstract flow of assigning resources to applications in yarn
1.what is leap second
设在巴黎的国际地球自转服务组织宣布，由于地球自转放缓的原因，今年全球将迎来史上第26次闰秒，时间在格林尼治时间6月30日午夜，科学家们将再度给钟表额外增加1秒钟时间，届时原子钟将会在23时59分59秒后停留一秒钟，让原子钟等上地球自转变慢的步伐。
that is:
case 'world time' is slower than atom time
how long a second in scale in this case
2.impacts
yesterday,the leap second was c ...
1.what is
so as the named 'unmanaged application master/UnmanagedAM' ,this masters are not controlled by RM,but client it self !yep,it's easy to test this kind of AMs in local ,and may be no any containers within it.so u can say that this is a 'mini AM' compared to a whole-function one,also,that ...
there are something differences between [2] which is pressed in the early 2.2 release,specially in step 5 shown in above.
ref:
hadoop 2-state machine-(1)
[2] 《Hadoop技术内幕：深入解析YARN架构设计与实现原理》
1.what
in many scenarios,we see some figures like this:some state node,some events triggered state changes,and certain directed-arcs.it look likes a running-machine with misc commands ,say like events.so it is called "State Machine".
yep,through these elements,we know a clear flow ...
this figure demonstrates the flow of how to submit a AM to yarn.
so u see this is a very flexible running-mode
this application is introduced to run shell command in distributed nodes(containers) as it named,so it's is ealy and let's to go ahead.
1.run 'ls' command in containers
2.which path does that command run on ?
3.how to run meaningful commands depend on nodes
1.run 'ls' command in contain ...
Introducing Hoya – HBase on YARN
application architecutre
jdk7和8的一些新特性介绍
JAVA 8 新特性详解
as you see,it's pretty hard to dig into the heart of zk in ensemble mode without any paxos basics,any design docs.so here i will ref some docs from internet (see Ref part in the end).
some threads/queues spawned in leader election
read /write in follower
read/write in lea ...
====以下部分内容转自paxos算法,并在其中以不同颜色加以评论====
算法的内容[编辑]
要满足 P2c 的约束，proposer 提出一个提案前，首先要和足以形成多数派的 acceptors 进行通信，获得他们进行的最近一次接受(accept)的提案（prepare ...
here will talk about the skeleton model of zookeeper,so the details of implemention are recommanded to dig into sources.
I startup
1.1 client side
1.2 server side
------
I startup
1.1 client side
as u can see,through the client shell entry,the zkCli.sh states that the c ...