Github user pwendell commented on a diff in the pull request:
https://github.com/apache/spark/pull/2444#discussion_r17799143
--- Diff: sbin/slaves.sh ---
@@ -67,20 +69,26 @@ fi
if [ "$HOSTLIST" = "" ]; then
if [ "$SPARK_SLAVES" = "" ]; then
- export HOSTLIST="${SPARK_CONF_DIR}/slaves"
+ if [ -f "${SPARK_CONF_DIR}/slaves" ]; then
+ HOSTLIST=`cat "${SPARK_CONF_DIR}/slaves"`
+ else
+ HOSTLIST=localhost
--- End diff --
We should change the docs in `spark-standalone.md` to explain two new
features:
1. You can set SSH_FOREGROUND if you cannot use paswordless SSH (currently,
it says this is required).
2. If there is no `slaves` file in existence, it will launch a single slave
at `localhost` by default.
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