rocksdb

History

Fosco Marotto 6c2bf9e916 Add copyright headers per FB open-source checkup tool. (#5199 ) Summary: internal task: T35568575 Pull Request resolved: https://github.com/facebook/rocksdb/pull/5199 Differential Revision: D14962794 Pulled By: gfosco fbshipit-source-id: 93838ede6d0235eaecff90d200faed9a8515bbbe		2019-04-18 10:55:01 -07:00
..
README	…
env_hdfs.h	Fix db_stress for custom env (#5122 )	2019-03-28 19:20:27 -07:00
setup.sh	Add copyright headers per FB open-source checkup tool. (#5199 )	2019-04-18 10:55:01 -07:00

README

This directory contains the hdfs extensions needed to make rocksdb store
files in HDFS.

It has been compiled and testing against CDH 4.4 (2.0.0+1475-1.cdh4.4.0.p0.23~precise-cdh4.4.0).

The configuration assumes that packages libhdfs0, libhdfs0-dev are 
installed which basically means that hdfs.h is in /usr/include and libhdfs in /usr/lib

The env_hdfs.h file defines the rocksdb objects that are needed to talk to an
underlying filesystem. 

If you want to compile rocksdb with hdfs support, please set the following
environment variables appropriately (also defined in setup.sh for convenience)
   USE_HDFS=1
   JAVA_HOME=/usr/local/jdk-7u79-64
   LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/jdk-7u79-64/jre/lib/amd64/server:/usr/local/jdk-7u79-64/jre/lib/amd64/:./snappy/libs
   make clean all db_bench

To run dbbench,
  set CLASSPATH to include your hadoop distribution
  db_bench --hdfs="hdfs://hbaseudbperf001.snc1.facebook.com:9000"