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Message-ID: <1365042870.89547.YahooMailNeo@web194702.mail.sg3.yahoo.com>
Date: Thu, 4 Apr 2013 10:34:30 +0800 (SGT)
From: Sai Sai <saigraph@yahoo.in>
Reply-To: Sai Sai <saigraph@yahoo.in>
Subject: Re: fsImage & editsLog questions
To: "user@hadoop.apache.org" <user@hadoop.apache.org>
In-Reply-To: <1364719534.91394.YahooMailNeo@web194703.mail.sg3.yahoo.com>
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1. Will fsImage maintain the data/metadata of name node.=0A2. Will any inpu=
t files be stored in fsImage.=0A=0A3. When a namenode goes down will all th=
e data in the name node go down or just the meta data only and what will ha=
ppen to fsimage & editslog.=0A5. Is the fsimage file which is also maintain=
ed as a backup =A0on multiple data nodes and secondary namenode or it just =
sits on a namenode.=0A6. Does fsimage sit on hdfs or namenode server.=0A6.=
=A0What exactly does the editsLog do?=0APlease pour some light.=0AThanks=0A=
Sai=0A
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ti=
mes new roman, new york, times, serif;font-size:12pt"><div>1. Will fsImage =
maintain the data/metadata of name node.</div><div><span style=3D"font-size=
: 12pt; ">2. Will any input files be stored in fsImage.</span><br></div><di=
v>3. When a namenode goes down will all the data in the name node go down o=
r just the meta data only and what will happen to fsimage &amp; editslog.</=
div><div>5. Is the fsimage file which is also maintained as a backup &nbsp;=
on multiple data nodes and secondary namenode or it just sits on a namenode=
.</div><div>6. Does fsimage sit on hdfs or namenode server.</div><div>6.&nb=
sp;<span style=3D"font-size: 12pt; ">What exactly does the editsLog do?</sp=
an></div><div style=3D"color: rgb(0, 0, 0); font-size: 12pt; font-family: '=
times new roman', 'new york', times, serif; background-color: transparent; =
font-style: normal; "><span style=3D"font-size: 12pt; ">Please pour some
 light.</span></div><div style=3D"color: rgb(0, 0, 0); font-size: 12pt; fon=
t-family: 'times new roman', 'new york', times, serif; background-color: tr=
ansparent; font-style: normal; "><span style=3D"font-size: 12pt; ">Thanks</=
span></div><div style=3D"color: rgb(0, 0, 0); font-size: 12pt; font-family:=
 'times new roman', 'new york', times, serif; background-color: transparent=
; font-style: normal; "><span style=3D"font-size: 12pt; ">Sai</span></div><=
div><br></div>  </div></body></html>
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