rocksdb

History

Yueh-Hsuan Chiang 3eddd1abe9 Add Env::GetThreadID(), which returns the ID of the current thread. Summary: Add Env::GetThreadID(), which returns the ID of the current thread. In addition, make GetThreadList() and InfoLog use same unique ID for the same thread. Test Plan: db_test listener_test Reviewers: igor, rven, IslamAbdelRahman, kradhakrishnan, sdong Reviewed By: sdong Subscribers: dhruba Differential Revision: https://reviews.facebook.net/D39735		2015-06-11 14:18:02 -07:00
..
README	hdfs cleanup and compile test against CDH 4.4.	2014-05-20 17:22:12 -04:00
env_hdfs.h	Add Env::GetThreadID(), which returns the ID of the current thread.	2015-06-11 14:18:02 -07:00
setup.sh	hdfs cleanup and compile test against CDH 4.4.	2014-05-20 17:22:12 -04:00

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
enviroment variables appropriately (also defined in setup.sh for convenience)
   USE_HDFS=1
   JAVA_HOME=/usr/local/jdk-6u22-64
   LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/jdk-6u22-64/jre/lib/amd64/server:/usr/local/jdk-6u22-64/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"