Snappy Installation on HDP

[#1]

I have a requirement to compress the HBase tabes in a HDP cluster using snappy. However, I have some clarifications over Snappy installation on HDP.

I executed the Compression Test even without installing snappy and I got a success output. I tried both the commands below.

hbase org.apache.hadoop.hbase.util.CompressionTest file:///tmp/test.txt snappy
hbase org.apache.hadoop.hbase.util.CompressionTest hdfs://hbase.primary.namenode:8020/tmp/test1.txt snappy

On both the occasions the output was:

2017-10-30 11:25:18,454 INFO  [main] hfile.CacheConfig: CacheConfig:disabled
2017-10-30 11:25:18,671 INFO  [main] compress.CodecPool: Got brand-new compressor [.snappy]
2017-10-30 11:25:18,679 INFO  [main] compress.CodecPool: Got brand-new compressor [.snappy]
2017-10-30 11:25:21,560 INFO  [main] hfile.CacheConfig: CacheConfig:disabled
2017-10-30 11:25:22,366 INFO  [main] compress.CodecPool: Got brand-new decompressor [.snappy]
SUCCESS

I see below libraries in the path /usr/hdp/2.6.1.0-129/hadoop/lib/native/ as well.

libhadoop.a 
libhadooppipes.a 
libhadoop.so 
libhadoop.so.1.0.0 
libhadooputils.a 
libhdfs.a 
libsnappy.so 
libsnappy.so.1 
libsnappy.so.1.1.4

So my questions are:

Does HDP support snappy compression by default? Don't we need to install Snappy?

Please verify this. The HDP version I'm using is 2.6.1.

[#2]

@Thanuja Kularathna

As per the doc of HDP you should install snappy-devel packages on all hosts.

----For RHEL/CentOS/Oracle Linux:
yum install snappy snappy-devel

----Execute the following command at all the nodes in your cluster:
 RHEL/CentOS/Oracle Linux:
yum install lzo lzo-devel hadooplzo hadooplzo-native

https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.2/bk_command-line-installation/content/instal...

.

[#3]

Got this answer from stackoverflow.

https://stackoverflow.com/questions/47029697/installing-snappy-on-a-hdp-cluster