[HADOOP-6069] Remove explicit dynamic loading of libz in native code

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 17/Jun/09 16:57
• Updated: 22/Jul/14 21:43
• Resolved: 22/Jul/14 21:43

Description

The native zlib code currently uses dlopen/dlsym to dynamically load libz. This used to make sense when there was an lzo option (so you could load libhadoop for lzo purposes without requiring libz as well). Now that libhadoop only has zlib as an option, it makes sense to just add it as an ld flag and let it be automatically loaded as a shlib dependency. I also doubt that there are any distros where libz isn't required by the base system.

Issue Links

• is related to: HADOOP-6436 Remove auto-generated native build files
• relates to: HADOOP-8901 GZip and Snappy support may not work without unversioned libraries