[ 
https://issues.apache.org/jira/browse/HADOOP-14482?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Wei-Chiu Chuang updated HADOOP-14482:
-------------------------------------
    Description: 
The current BUILDING.txt includes the following steps for installing zstd 
library:
    $ sudo apt-get install zstd

This is incorrect. On my Ubuntu 16 machine, zstd is not a library
{quote}
apt-cache search zstd
libzstd-dev - fast lossless compression algorithm -- development files
libzstd0 - fast lossless compression algorithm
zstd - fast lossless compression algorithm -- CLI tool
{quote}
On a Ubuntu 14 machine, I couldn't even find anything related to zstd.

In fact, to build Hadoop with ZStandard library, I have to install libzstd-dev.
I will also need to install the runtime to use it. libzstd0 is the older 
version. libzstd1 is for zstd 1.x. It's not clear to me if libzstd0 is 
compatible. CentOS does have libzstd1 though.

Perhaps we can provide instruction to compile/install libzstd from source code.

{quote}
  * Use -Dzstd.prefix to specify a nonstandard location for the libzstd
    header files and library files. You do not need this option if you have
    installed zstandard using a package manager.

  * Use -Dzstd.lib to specify a nonstandard location for the libzstd library
    files.  Similarly to zstd.prefix, you do not need this option if you have
    installed using a package manager.
{quote}
At least for CentOS, the library installed by rpm was not located and I had to 
specify -Dzstd.prefix to get it installed.

  was:
The current BUILDING.txt includes the following steps for installing zstd 
library:
    $ sudo apt-get install zstd

This is incorrect. On my Ubuntu machine, zstd is not a library
{quote}
apt-cache search zstd
libzstd-dev - fast lossless compression algorithm -- development files
libzstd0 - fast lossless compression algorithm
zstd - fast lossless compression algorithm -- CLI tool
{quote}
In fact, to build Hadoop with ZStandard library, I have to install libzstd-dev.
I will also need to install the runtime to use it. libzstd0 is the older 
version. libzstd1 is for zstd 1.x. It's not clear to me if libzstd0 is 
compatible. CentOS does have libzstd1 though.

{quote}
  * Use -Dzstd.prefix to specify a nonstandard location for the libzstd
    header files and library files. You do not need this option if you have
    installed zstandard using a package manager.

  * Use -Dzstd.lib to specify a nonstandard location for the libzstd library
    files.  Similarly to zstd.prefix, you do not need this option if you have
    installed using a package manager.
{quote}
At least for CentOS, the library installed by rpm was not located and I had to 
specify -Dzstd.prefix to get it installed.


> Update BUILDING.txt to include the correct steps to install zstd library
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-14482
>                 URL: https://issues.apache.org/jira/browse/HADOOP-14482
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: io
>    Affects Versions: 3.0.0-alpha2
>            Reporter: Wei-Chiu Chuang
>            Priority: Minor
>
> The current BUILDING.txt includes the following steps for installing zstd 
> library:
>     $ sudo apt-get install zstd
> This is incorrect. On my Ubuntu 16 machine, zstd is not a library
> {quote}
> apt-cache search zstd
> libzstd-dev - fast lossless compression algorithm -- development files
> libzstd0 - fast lossless compression algorithm
> zstd - fast lossless compression algorithm -- CLI tool
> {quote}
> On a Ubuntu 14 machine, I couldn't even find anything related to zstd.
> In fact, to build Hadoop with ZStandard library, I have to install 
> libzstd-dev.
> I will also need to install the runtime to use it. libzstd0 is the older 
> version. libzstd1 is for zstd 1.x. It's not clear to me if libzstd0 is 
> compatible. CentOS does have libzstd1 though.
> Perhaps we can provide instruction to compile/install libzstd from source 
> code.
> {quote}
>   * Use -Dzstd.prefix to specify a nonstandard location for the libzstd
>     header files and library files. You do not need this option if you have
>     installed zstandard using a package manager.
>   * Use -Dzstd.lib to specify a nonstandard location for the libzstd library
>     files.  Similarly to zstd.prefix, you do not need this option if you have
>     installed using a package manager.
> {quote}
> At least for CentOS, the library installed by rpm was not located and I had 
> to specify -Dzstd.prefix to get it installed.



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