Perform the tasks in the following order when stopping a system where this product is installed.
Figure 8.2 Sequence for stopping the system where this product is installed
Stop the servers after using bdpp_stop to stop the Hadoop of this product (refer to "A.16 bdpp_stop" for details).
Execution of this command stops the Hadoop processes operating at the master server and slave servers.
When unmounting the DFS, unmount the DFS clients first, then unmount the DFS management server.
For this reason, first stop the collaboration servers, development servers, and slave servers, which are the DFS clients.
When operating an existing system where the collaboration servers cannot be stopped, only unmounting of the DFS on the collaboration server needs to be performed.
Stop the master servers after DFS clients have been stopped.
First stop the primary master server, and then the secondary master server when operating using a master server replicated configuration.
Note
The "JobTracker" of Apache Hadoop on the master servers cannot be stopped directly - you must stop the Hadoop of this product using bdpp_stop.
Refer to the Hadoop Project Top Page (http://hadoop.apache.org/) for details on how to use Apache Hadoop.
