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NameNode Safe Mode and CheckPointing - HDFS - [mail # user]
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...When the checkpointing starts, the primary namenode starts a new edits file. During the checkpointing process will the namenode go into safe mode? According to the Hadoop - The Definitive Gu...
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Author: Praveen Sripati,
2012-01-08, 03:43
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Re: Configuring Fully-Distributed Operation - HDFS - [mail # user]
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...At the minimum you need to specify the location of the namenode and the jobtracker in the configuration files for all the nodes and the client, rest of the properties are defaulted. Also, ba...
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Author: Praveen Sripati,
2011-12-27, 03:02
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Re: HDFS HTTP client - HDFS - [mail # user]
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...Also check WebHDFS (1). I think both Hoop and WebHDFS are not into Hadoop yet. Check the HDFS-2178 and HDFS-2316 JIRA for the status. (1) - http://hortonworks.com/webhdfs-%E2%80%93-htt...
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Author: Praveen Sripati,
2011-12-06, 11:47
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Re: SequenceFile with one very large value - HDFS - [mail # user]
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...text files) after a bunch of records, and that is the reason why your record does not split when read. Sync is placed after every N records and is used for moving from an arbitra...
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Author: Praveen Sripati,
2011-12-05, 15:46
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Re: how to find data nodes on which a file is distributed to? - HDFS - [mail # user]
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...Go to the NameNode web UI (default port is 50070) and select 'Browse the filesystem' and drill down to the file. At the bottom of the page the block report is shown. Or else 'hadoop fsck / -...
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Author: Praveen Sripati,
2011-11-28, 16:31
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Re: Hadoop Security - HDFS - [mail # user]
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...Hi, the files in HDFS. You could define a compression codec that does the encryption. Check the below thread for more details. http://www.mail-archive.com/[EMAIL PROTECTED]...
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Author: Praveen Sripati,
2011-11-28, 14:54
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Regarding NN HA (HDFS-1623) - HDFS - [mail # dev]
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...Hi, Which Hadoop release is the HDFS NN HA (HDFS-1623) targeted? I saw a presentation (http://www.slideshare.net/hortonworks/nn-ha-hadoop-worldfinal) on NN HA and it's very interesting...
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Author: Praveen Sripati,
2011-11-17, 09:13
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Re: set reduced block size for a specific file - HDFS - [mail # user]
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...Hi, There are tons of parameters for mapreduce. How to know if a property is a client or serve side property? Thanks, Praveen On Sun, Aug 28, 2011 at 4:53 AM, Aaron T. Myer...
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Author: Praveen Sripati,
2011-08-28, 03:57
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Number of bytes per checksum - HDFS - [mail # dev]
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...Hi, Why is the checksum done for io.bytes.per.checksum (defaults to 512) instead of the complete block at once (dfs.block.size defaults to 67108864)? If a block is corrupt ...
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Author: Praveen Sripati,
2011-06-24, 14:24
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Re: DataNode not able to talk to NameNode - HDFS - [mail # user]
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...Hi, Thanks for the quick response. Wish the documentation was a bit more clear on it. Now it works. I get "Live Datanodes : 1" in the NameNode console. Just curious, how d...
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Author: Praveen Sripati,
2010-04-02, 04:49
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