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MapReduce >> mail # user >> block size


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Kartashov, Andy 2012-11-20, 16:31
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Re: block size
Hi,

Am 20.11.2012 um 17:31 schrieb "Kartashov, Andy" <[EMAIL PROTECTED]>:

> After changing property of block size from 64 to 128Mb, will I need to re-import data or will running hadoop balancer will resize blocks in hdfs?

the blocksize affects new files only, existing files will not be modified. As you said, you need to re-import those old files if you want to store them with the new blocksize.

Kai

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Kai Voigt
[EMAIL PROTECTED]
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Kartashov, Andy 2012-11-20, 16:36
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Shahab Yunus 2014-01-03, 16:45