Github user keith-turner commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/110#discussion_r66085575
--- Diff: docs/src/main/asciidoc/chapters/administration.txt ---
@@ -479,40 +479,22 @@ With very powerful nodes, it may be beneficial to run
more than one TabletServer
node. This decision should be made carefully and with much deliberation as
Accumulo is designed
to be able to scale to using 10's of GB of RAM and 10's of CPU cores.
-To run multiple TabletServers on a single host, it is necessary to create
multiple Accumulo configuration
-directories. Ensuring that these properties are appropriately set (and
remain consistent) are an exercise
-for the user.
+To run multiple TabletServers on a single host you will need to change the
+NUM_TSERVERS+ property
+in the accumulo-env.sh file from 1 to the number of TabletServers that you
want to run. On NUMA
+hardware, with numactl installed, the TabletServer will interleave its
memory allocations across
+the NUMA nodes and the processes will be scheduled on all the NUMA cores
without restriction. To
+change this behavior you can uncomment the +TSERVER_NUMA_OPTIONS+ example
in accumulo-env.sh and
+set the numactl options for each TabletServer.
Accumulo TabletServers bind certain ports on the host to accommodate
remote procedure calls to/from
-other nodes. This requires additional configuration values in
+accumulo-site.xml+:
+other nodes. Running more than one TabletServer on a host requires that
you set the following
+properties to zero in +accumulo-site.xml+:
--- End diff --
You could replace the following line with the xml that needs to be pasted
into accumulo-site.xml.
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