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Solve some minor hadoop problems (finishing Version)

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Author: User
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1 dfsadmin-setquota Problem
Dfsadmin-setquota limit the number of files
Dfsadmin-setspacequota limits disk space


2 solve the hadoop small file problem?
The default size of a data block is 64 mb. If the size of a file is smaller than 64 MB, it is a small hadoop file.
This will waste space, so we need to use archive to merge small files. The data block size can be used.
The DFS. Block. Size attribute is configured.


3 start-dfs.sh alarm information
Unable to load native-hadoop library for your platform...
Using built-in Java classes
The native library is not found and the built-in Java code is used. This shows that you have not compiled the hadoop system completely.
It is best to download the source code and compile the source code step by step to obtain the final compiled file.

Solve some minor hadoop problems (finishing Version)

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