Index: src/docbkx/troubleshooting.xml =================================================================== --- src/docbkx/troubleshooting.xml (revision 1375655) +++ src/docbkx/troubleshooting.xml (working copy) @@ -992,7 +992,18 @@ +
+ HDFS +
+ HDFS & HBase + HBase uses HDFS to store its HFile, i.e. the core HBase files and the Write-Ahead-Logs, i.e. the files that will be used to restore the data after a crash. +In both cases, the reliability of HBase comes from the fact that HDFS writes the data to multiple locations. To be efficient, HBase needs the data to be available locally, hence it's highly recommended to have the HDFS datanode on the same machines as the HBase Region Servers. Detailed information on how HDFS works can be found at + +
+ +
+
Amazon EC2