This PR is based on the work of roji to support running Spark scripts from symlinks. Thanks for the great work roji . Would you mind taking a look at this PR, thanks a lot.
For releases like HDP and others, normally it will expose the Spark executables as symlinks and put in `PATH`, but current Spark's scripts do not support finding real path from symlink recursively, this will make spark fail to execute from symlink. This PR try to solve this issue by finding the absolute path from symlink.
Instead of using `readlink -f` like what this PR (https://github.com/apache/spark/pull/2386) implemented is that `-f` is not support for Mac, so here manually seeking the path through loop.
I've tested with Mac and Linux (Cent OS), looks fine.
This PR did not fix the scripts under `sbin` folder, not sure if it needs to be fixed also?
Please help to review, any comment is greatly appreciated.
Author: jerryshao <sshao@hortonworks.com>
Author: Shay Rojansky <roji@roji.org>
Closes#8669 from jerryshao/SPARK-2960.
This allows Mesos deployments to use the shuffle service (and implicitly dynamic allocation). It does so by adding a new "main" class and two corresponding scripts in `sbin`:
- `sbin/start-shuffle-service.sh`
- `sbin/stop-shuffle-service.sh`
Specific options can be passed in `SPARK_SHUFFLE_OPTS`.
This is picking up work from #3861 /cc tnachen
Author: Iulian Dragos <jaguarul@gmail.com>
Closes#4990 from dragos/feature/external-shuffle-service and squashes the following commits:
6c2b148 [Iulian Dragos] Import order and wrong name fixup.
07804ad [Iulian Dragos] Moved ExternalShuffleService to the `deploy` package + other minor tweaks.
4dc1f91 [Iulian Dragos] Reviewer’s comments:
8145429 [Iulian Dragos] Add an external shuffle service that can be run as a daemon.
