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The following page has been changed by KonstantinShvachko: http://wiki.apache.org/hadoop/FAQ ------------------------------------------------------------------------------ Text files are handled similarly, using newlines instead of sync marks. + [[BR]] + [[Anchor(24)]] + '''24. [#24 HDFS. What happens when two clients try to write into the same HDFS file?]''' + + HDFS supports exclusive writes only. [[BR]] + When the first client contacts the name-node to open the file for writing, + the name-node grants a lease to the client to create this file. + When the second client tries to open the same file for writing, the name-node + will see that the lease for the file is already granted to another client, + and will reject the open request for the second client. +
