Apache HBase - External Block Cache
· HBase module that provides out of process block cache.
Currently Memcached is the reference implementation for external block cache.
External block caches allow HBase to take advantage of other more complex caches that can live
longer than the HBase regionserver process and are not necessarily tied to a single computer
life time. However external block caches add in extra operational overhead.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window hbase-external-blockcache-2.5.5-hadoop3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.
