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This article mainly introduces how to check whether Hadoop is 32-bit or 64-bit, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

When hadoop is installed, we need to know whether the hadoop version is 32-bit or 64-bit.

The hadoop official website originally provides 32-bit, because most of us are 64-bit operating systems, so we have to compile. Later, the official website has provided 64-bit since the hadoop2.5 version.

In order to prevent us from using it incorrectly, let's actually operate and observe.

The hadoop-2.7.2.tar.gz installation package we downloaded from the official website

Whether the hadoop is 32-bit or 64-bit, we can look at the local library. Enter $hadoop_home/lib/native and use the file command

# #

After decompression, we enter

Cd hadoop-2.7.2/lib/native/

Use the file command:

File libhadoop.so.1.0.0

Libhadoop.so.1.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID [sha1] = 0x015fbb805a79777d41d110364d2054314d098b9f, not stripped

The display ELF 64-bit is 64-bit.

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