About spark and hbase - hadoop

Question

This is the first time I ask question, if there's any place I should improve please tell me, thanks.
Here is my system version :
jdk1.8.0_65
hadoop-2.6.1
hbase-1.0.2
scala-2.11.7
spark-1.5.1
zookeeper-3.4.6
Then there is my question:
I'm gonna built a system that can store data from sensors
I need to store data in it and to analysis the data near
real-time, so I use spark to make my analysis run faster,
but I'm wondering "Do I Really Need Hbase Database" ?
There is some problem when I run Spark:
First I run: hadoop:start-all.sh and Spark:start-all.sh, then I
run Spark:spark-shell
This is what I got:
15 / 12 / 01 22: 16: 47 WARN NativeCodeLoader: Unable to load native - hadoop library
for your platform...using builtin - java classes where applicable Welcome to Using Scala version 2.10 .4(Java HotSpot(TM) 64 - Bit Server VM, Java 1.8 .0 _65)
Type in expressions to have them evaluated.
Type: help
for more information.
15 / 12 / 01 22: 16: 56 WARN MetricsSystem: Using
default name DAGScheduler
for source because spark.app.id is not set.Spark context available as sc.
15 / 12 / 01 22: 16: 59 WARN Connection: BoneCP specified but not present in CLASSPATH(or one of dependencies)
15 / 12 / 01 22: 16: 59 WARN Connection: BoneCP specified but not present in CLASSPATH(or one of dependencies)
15 / 12 / 01 22: 17: 07 WARN ObjectStore: Version information not found in metastore.hive.metastore.schema.verification is not enabled so recording the schema version 1.2 .0
15 / 12 / 01 22: 17: 07 WARN ObjectStore: Failed to get database
default, returning NoSuchObjectException
15 / 12 / 01 22: 17: 10 WARN NativeCodeLoader: Unable to load native - hadoop library
for your platform...using builtin - java classes where applicable
15 / 12 / 01 22: 17: 11 WARN Connection: BoneCP specified but not present in CLASSPATH(or one of dependencies)
15 / 12 / 01 22: 17: 11 WARN Connection: BoneCP specified but not present in CLASSPATH(or one of dependencies)
SQL context available as sqlContext.
scala >
There are so many warning, am I doing the right thing? Like where can
I set spark.app.id or even do I need spark.app.id? And what is "Failed to get database default, returning NoSuchObjectException" ?
Thank's for helping me.