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Tips for optimizing HDFS writes with replication=1?

+2 votes

I am writing temp files to HDFS with replication=1, so I expect the blocks to be stored on the writing node. Are there any tips, in general, for optimizing write performance to HDFS? I use 128K buffers in the write() calls. Are there any parameters that can be set on the connection or in HDFS configuration to optimize this use pattern?

posted Jan 22, 2014 by Kiran Kumar

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