Github user lw-lin commented on a diff in the pull request:
https://github.com/apache/spark/pull/12129#discussion_r58290846
--- Diff:
core/src/main/scala/org/apache/spark/scheduler/cluster/mesos/MesosSchedulerUtils.scala
---
@@ -283,11 +283,11 @@ private[mesos] trait MesosSchedulerUtils extends
Logging {
* are separated by ':'. The ':' implies equality (for singular values)
and "is one of" for
* multiple values (comma separated). For example:
* {{{
- * parseConstraintString("tachyon:true;zone:us-east-1a,us-east-1b")
+ * parseConstraintString("os:centos7;zone:us-east-1a,us-east-1b")
--- End diff --
The key-value `tachyon:true` has been changed to `os:centos7`, since `os`
is an example constrain which appears in [Mesos official
docs](http://mesos.apache.org/documentation/attributes-resources/).
Also note that the `true` as in `tachyon:true` here is actually treated as
normal texts, so changing it to `os:centos7` doesn't make any difference.
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