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Can I change the IP/hostname of the dfs name without data loss? - HDFS - [mail # user]
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...Hadoop version: hadoop-0.20.205.0 My NN machine has 2 IP addresses and 2 hostnames assigned to them respectively. I have configured "fs.default.name" using one of the hostnames and use...
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Author: Jianhui Zhang,
2013-01-04, 22:43
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NN uses up all ports (java.net.BindException: Cannot assign requested address) - HDFS - [mail # user]
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...version: hadoop-0.20.205.0 We've seen this the second time. The JT had this error: 2012-10-08 11:44:03,928 WARN org.apache.hadoop.hdfs.DFSClient: Problem renewing lease for DFSCl...
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Author: Jianhui Zhang,
2012-10-09, 23:17
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unhealthy NN after startup - HDFS - [mail # user]
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...Hi, I was restarting the DFS cluster. First, the DNs did not join. But if I kept stopping and starting each DN, eventually, all DNs joined the NN. But the NN doesn't look healthy. &nbs...
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Author: Jianhui Zhang,
2012-07-03, 01:04
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Re: Namenode hangs on startup - HDFS - [mail # user]
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...Thanks for helping. I do have a secondary namenode. And I'm starting one datanode at a time now. Previously I was using start-dfs.sh to start NN and slaves. I observed pretty str...
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Author: Jianhui Zhang,
2012-07-02, 22:30
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Re: Namenode hangs on startup - HDFS - [mail # user]
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...Hi Harsh, The web portal of the NN shows 0 nodes. Looking into each node's log, all nodes but one have been staying at: /***************************************************...
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Author: Jianhui Zhang,
2012-07-02, 19:32
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Re: Namenode hangs on startup - HDFS - [mail # user]
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...Hi folks, Thanks for helping, especially at such earlier hours. After leaving it overnight, during which period nothing happened in the log, I restarted this morning. This time, ...
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Author: Jianhui Zhang,
2012-07-02, 19:04
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Namenode hangs on startup - HDFS - [mail # user]
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...Hi, Apache Hadoop 0.20.205. I'm trying to restart NN and it always hangs at the very beginning. The only logs I've got are: /***********************************************...
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Author: Jianhui Zhang,
2012-07-02, 09:04
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