hbase snappy 安装_配置Hadoop2.7.2和Hbase1.1.5支持Snappy解压压缩库

一.Hadoop支持Snappy

2.查看libsnappy.so.1.2.0

[root@sht-sgmhadoopnn-01 ~]#ll $HADOOP_HOME/lib/native/

total 4880

-rw-r--r-- 1 root root 1211196 Jun 21 19:11 libhadoop.a

-rw-r--r-- 1 root root 1485756 Jun 21 19:12 libhadooppipes.a

lrwxrwxrwx 1 root root18 Jun

21 19:45 libhadoop.so -> libhadoop.so.1.0.0

-rwxr-xr-x 1 root root717060 Jun

21 19:11 libhadoop.so.1.0.0

-rw-r--r-- 1 root root582128 Jun

21 19:12 libhadooputils.a

-rw-r--r-- 1 root root365052 Jun

21 19:11 libhdfs.a

lrwxrwxrwx 1 root root16 Jun

21 19:45 libhdfs.so -> libhdfs.so.0.0.0

-rwxr-xr-x 1 root root229289 Jun

21 19:11 libhdfs.so.0.0.0

-rw-r--r-- 1 root root233538 Jun

21 19:11 libsnappy.a

-rwxr-xr-x 1 root root953 Jun

21 19:11 libsnappy.la

lrwxrwxrwx 1 root root18 Jun

21 19:45 libsnappy.so -> libsnappy.so.1.2.0

lrwxrwxrwx 1 root root18 Jun

21 19:45 libsnappy.so.1 -> libsnappy.so.1.2.0

-rwxr-xr-x 1 root

root147726 Jun 21 19:11 libsnappy.so.1.2.0

[root@sht-sgmhadoopnn-01 ~]#

###假如集群已经安装好

3.修改$HADOOP_HOME/etc/hadoop/hadoop-env.sh,添加

export

HADOOP_OPTS="$HADOOP_OPTS-Djava.library.path=$HADOOP_HOME/lib:$HADOOP_HOME/lib/native"

############会解决Warn:””################################################

[root@sht-sgmhadoopnn-01 ~]# hadoop fs -ls /

16/06/21 15:08:24 WARN util.NativeCodeLoader:

Unable to load native-hadoop library for your platform... usingbuiltin-java classes where applicable

##################################################################################################

4.修改$HADOOP_HOME/etc/hadoop/core-site.xml

点击(此处)折叠或打开

io.compression.codecs

org.apache.hadoop.io.compress.GzipCodec,

org.apache.hadoop.io.compress.DefaultCodec,

org.apache.hadoop.io.compress.BZip2Codec,

org.apache.hadoop.io.compress.SnappyCodec

5.修改$HADOOP_HOME/etc/hadoop/mapred-site.xml中有关压缩属性,测试snappy

点击(此处)折叠或打开

mapreduce.map.output.compress

true

mapreduce.map.output.compress.codec

org.apache.hadoop.io.compress.SnappyCodec

6.新增$HADOOP_HOME/etc/hadoop/yarn-site.xml(是否启用日志聚集功能、yarn日志服务的地址、配置yarn的memory和cpu)

点击(此处)折叠或打开

yarn.log-aggregation-enable

true

yarn.log.server.url

http://sht-sgmhadoopnn-01:19888/jobhistory/logs

yarn.nodemanager.resource.memory-mb

10240

yarn.scheduler.minimum-allocation-mb

1500

单个任务可申请最少内存，默认1024MB

yarn.scheduler.maximum-allocation-mb

2500

单个任务可申请最大内存，默认8192MB

yarn.nodemanager.resource.cpu-vcores

2

7.将hadoop-env.sh,core-site.xml,mapred-site.xml,yarn-site.xml同步到集群其他节点

8.重启Hadoop集群

9.验证1:

hadoop checknative

[root@sht-sgmhadoopnn-01 ~]#hadoop

checknative

16/06/25 12:58:13 WARN bzip2.Bzip2Factory: Failed to load/initialize

native-bzip2 library system-native, will use pure-Java version

16/06/25 12:58:13 INFO zlib.ZlibFactory: Successfully loaded &

initialized native-zlib library

Native library checking:

hadoop:true

/hadoop/hadoop-2.7.2/lib/native/libhadoop.so.1.0.0

zlib:true

/usr/local/lib/libz.so.1

snappy:true

/hadoop/hadoop-2.7.2/lib/native/libsnappy.so.1

lz4:true revision:99

bzip2:false

openssl: true /usr/lib64/libcrypto.so

[root@sht-sgmhadoopnn-01 ~]#

####支持本地native,支持snappy

10.验证2

[root@sht-sgmhadoopnn-01 ~]#vi test.log

a

c d

c d d d a

1 2

a

[root@sht-sgmhadoopnn-01 ~]#hadoop

fs -mkdir /input

[root@sht-sgmhadoopnn-01 ~]#hadoop

fs -put test.log /input/

[root@sht-sgmhadoopnn-01 ~]#hadoop

jar /hadoop/hadoop/share/hadoop/mapreduce/hadoop-mapreduce-examples-*.jar

wordcount /input /output1

为了验证是否成功，往

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