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From: Juan Pino <juancitomiguelito@gmail.com>
Date: Sat, 3 Aug 2013 13:00:28 +0100
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 <CAF1NyNMRCq4crWzmNgEQBZfyFAf4+at3Kq4xfNiAV_voWnSiVg@mail.gmail.com>
Subject: load properties from property file into Configuration object
To: user@hadoop.apache.org
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Hi,

I am trying to simplify code that loads properties from a property file
into a Configuration object:

Short excerpt of the code:

String configFile = args[0];
Properties p = new Properties();
p.load(new FileInputStream(configFile));
Configuration conf = getConf();
for (String prop: p.stringPropertyNames()) {
  conf.set(prop, p.getProperty(prop));
}

The context is that my program can be run with an optional argument which
is a config file as "hadoop jar MYJAR MYCLASS -D property1=PROPERTY1 -D
property2=PROPERTY2 [MYCONFIGFILE]"
The format of MYCONFIGFILE is
"property3=PROPERTY3<NEWLINE>property4=PROPERTY4 etc."

Looking at the Configuration api, I didn't see any method that directly
loads properties from a property file.
Looking at the Configuration code, Configuration looks like a wrapper
around Properties, so I thought there was a similar method to
Properties.load or a method that sets several properties at the same time.
Is there a way to do this ?

Thanks very much,

Juan

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<div dir=3D"ltr">Hi,<div><br></div><div>I am trying to simplify code that l=
oads properties from a property file into a Configuration object:</div><div=
><br></div><div>Short excerpt of the code:</div><div><br></div><div>String =
configFile =3D args[0];</div>

<div>Properties p =3D new Properties();</div><div>p.load(new FileInputStrea=
m(configFile));</div><div>Configuration conf =3D getConf();</div><div>for (=
String prop: p.stringPropertyNames()) {</div><div>=C2=A0 conf.set(prop, p.g=
etProperty(prop));</div>

<div>}</div><div><br></div><div>The context is that my program can be run w=
ith an optional argument which is a config file as &quot;hadoop jar MYJAR=
=C2=A0MYCLASS -D property1=3DPROPERTY1 -D property2=3DPROPERTY2 [MYCONFIGFI=
LE]&quot;</div>

<div>The format of MYCONFIGFILE is &quot;property3=3DPROPERTY3&lt;NEWLINE&g=
t;property4=3DPROPERTY4 etc.&quot;</div><div><div><br></div><div>Looking at=
 the Configuration api, I didn&#39;t see any method that directly loads pro=
perties from a property file.</div>

<div>Looking at the Configuration code, Configuration looks like a wrapper =
around Properties, so I thought there was a similar method to Properties.lo=
ad or a method that sets several properties at the same time.</div><div>

Is there a way to do this ?</div><div><br></div><div>Thanks very much,</div=
><div><br></div><div>Juan</div><div><br></div>-- <br><div dir=3D"ltr">In li=
ght of the recent NSA scandal, please consider encrypting your reply by usi=
ng my public key available at=C2=A0<a href=3D"http://mi.eng.cam.ac.uk/~jmp8=
4/pgp.txt" target=3D"_blank">http://mi.eng.cam.ac.uk/~jmp84/pgp.txt</a>=C2=
=A0If you use webmail, you may consider mailvelope (<a href=3D"http://mailv=
elope.com/" target=3D"_blank">http://mailvelope.com/</a>) which is a very e=
asy to use plugin available for chrome and probably soon for firefox.</div>


</div></div>

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