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Date: Tue, 01 Jul 2008 18:54:40 +0200
From: Christian Saar <saar@adacor.com>
Organization: ADACOR Hosting GmbH
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To: core-user@hadoop.apache.org
Subject: Re: Repeated Exceptions in SecondaryNamenode Log
References: <486A4B14.1000401@adacor.com>
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Hallo again,

I have logged the network traffic with tcpdump and the secondarynamenode
connects to the namenode!?:

> 18:40:39.323920 IP 172.20.11.102.53230 > 172.20.11.101.9000: S 28272867=
10:2827286710(0) win 5840 <mss 1460,sackOK,timestamp 1045811384 0,nop,wsc=
ale 7>
> 18:40:39.324021 IP 172.20.11.101.9000 > 172.20.11.102.53230: S 17473740=
0:174737400(0) ack 2827286711 win 5792 <mss 1460,sackOK,timestamp 123707 =
1045811384,nop,wscale 7>
> 18:40:39.324030 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 1 wi=
n 46 <nop,nop,timestamp 1045811384 123707>
> 18:40:39.324647 IP 172.20.11.102.53230 > 172.20.11.101.9000: P 1:168(16=
7) ack 1 win 46 <nop,nop,timestamp 1045811384 123707>
> 18:40:39.324747 IP 172.20.11.101.9000 > 172.20.11.102.53230: . ack 168 =
win 54 <nop,nop,timestamp 123708 1045811384>
> 18:40:39.324756 IP 172.20.11.101.9000 > 172.20.11.102.53230: . ack 168 =
win 54 <nop,nop,timestamp 123708 1045811384>
> 18:40:39.324769 IP 172.20.11.101.9000 > 172.20.11.102.53230: . ack 168 =
win 54 <nop,nop,timestamp 123708 1045811384>
> 18:40:39.531873 IP 172.20.11.101.9000 > 172.20.11.102.53230: P 1:20(19)=
 ack 168 win 54 <nop,nop,timestamp 123915 1045811384>
> 18:40:39.531880 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 20 w=
in 46 <nop,nop,timestamp 1045811592 123915>
> 18:40:39.531901 IP 172.20.11.101.9000 > 172.20.11.102.53230: P 1:20(19)=
 ack 168 win 54 <nop,nop,timestamp 123915 1045811384>
> 18:40:39.531905 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 20 w=
in 46 <nop,nop,timestamp 1045811592 123915,nop,nop,sack 1 {1:20}>
> 18:40:39.531910 IP 172.20.11.101.9000 > 172.20.11.102.53230: P 1:20(19)=
 ack 168 win 54 <nop,nop,timestamp 123915 1045811384>
> 18:40:39.531914 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 20 w=
in 46 <nop,nop,timestamp 1045811592 123915,nop,nop,sack 1 {1:20}>
> 18:40:39.532245 IP 172.20.11.102.53230 > 172.20.11.101.9000: P 168:193(=
25) ack 20 win 46 <nop,nop,timestamp 1045811592 123915>
> 18:40:39.532311 IP 172.20.11.101.9000 > 172.20.11.102.53230: . ack 193 =
win 54 <nop,nop,timestamp 123915 1045811592>
> 18:40:39.532350 IP 172.20.11.101.9000 > 172.20.11.102.53230: . ack 193 =
win 54 <nop,nop,timestamp 123915 1045811592,nop,nop,sack 1 {168:193}>
> 18:40:39.533398 IP 172.20.11.101.9000 > 172.20.11.102.53230: P 20:39(19=
) ack 193 win 54 <nop,nop,timestamp 123916 1045811592>
> 18:40:39.573609 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 39 w=
in 46 <nop,nop,timestamp 1045811633 123916>
> 18:40:41.485795 IP 172.20.11.102.53230 > 172.20.11.101.9000: F 193:193(=
0) ack 39 win 46 <nop,nop,timestamp 1045813546 123916>
> 18:40:41.485898 IP 172.20.11.101.9000 > 172.20.11.102.53230: F 39:39(0)=
 ack 194 win 54 <nop,nop,timestamp 125869 1045813546>
> 18:40:41.485905 IP 172.20.11.102.53230 > 172.20.11.101.9000: . ack 40 w=
in 46 <nop,nop,timestamp 1045813546 125869>




Christian Saar schrieb:
> Hallo All,
>=20
> We have this Exception in our Logs:
>=20
>> 2008-07-01 17:12:02,392 ERROR org.apache.hadoop.dfs.NameNode.Secondary=
: Exception in doCheckpoint:
>> 2008-07-01 17:12:02,392 ERROR org.apache.hadoop.dfs.NameNode.Secondary=
: java.net.ConnectException: Connection refused
>>         at java.net.PlainSocketImpl.socketConnect(Native Method)
>>         at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333=
)
>>         at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.j=
ava:193)
>>         at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
>>         at java.net.Socket.connect(Socket.java:519)
>>         at java.net.Socket.connect(Socket.java:469)
>>         at sun.net.NetworkClient.doConnect(NetworkClient.java:157)
>>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:394)=

>>         at sun.net.www.http.HttpClient.openServer(HttpClient.java:529)=

>>         at sun.net.www.http.HttpClient.<init>(HttpClient.java:233)
>>         at sun.net.www.http.HttpClient.New(HttpClient.java:306)
>>         at sun.net.www.http.HttpClient.New(HttpClient.java:323)
>>         at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClien=
t(HttpURLConnection.java:788)
>>         at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Ht=
tpURLConnection.java:729)
>>         at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURL=
Connection.java:654)
>>         at sun.net.www.protocol.http.HttpURLConnection.getInputStream(=
HttpURLConnection.java:977)
>>         at org.apache.hadoop.dfs.TransferFsImage.getFileClient(Transfe=
rFsImage.java:149)
>>         at org.apache.hadoop.dfs.TransferFsImage.getFileClient(Transfe=
rFsImage.java:188)
>>         at org.apache.hadoop.dfs.SecondaryNameNode.getFSImage(Secondar=
yNameNode.java:245)
>>         at org.apache.hadoop.dfs.SecondaryNameNode.doCheckpoint(Second=
aryNameNode.java:310)
>>         at org.apache.hadoop.dfs.SecondaryNameNode.run(SecondaryNameNo=
de.java:223)
>>         at java.lang.Thread.run(Thread.java:619)
>=20
> but the PrimaryNamenode looks good:
>=20
>> 2008-07-01 17:17:02,034 INFO org.apache.hadoop.fs.FSNamesystem: Roll E=
dit Log from 172.20.11.102
>=20
> anybody know how i can find the problem here?
>=20

--=20


mit freundlichen Gr=FC=DFen

Christian Saar

=2E...............................................
Adacor Hosting GmbH
Kaiserleistrasse 51
D-63067 Offenbach am Main

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Telefax  +49 (0)69 905089 29
Email    saar@adacor.com

Zentrale:
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