Commit graph

57 commits

Author SHA1 Message Date
Patrick Wendell 92a677891c Preparing development version 1.4.0-SNAPSHOT 2015-06-02 08:41:15 -07:00
Patrick Wendell 48c506724a Preparing Spark release v1.4.0-rc4 2015-06-02 08:41:10 -07:00
Patrick Wendell e549874c33 Preparing development version 1.4.0-SNAPSHOT 2015-05-29 13:07:07 -07:00
Patrick Wendell dd109a8746 Preparing Spark release v1.4.0-rc3 2015-05-29 13:06:59 -07:00
Patrick Wendell c68abaa34e Preparing development version 1.4.0-SNAPSHOT 2015-05-29 12:15:18 -07:00
Patrick Wendell fb60503ff2 Preparing Spark release v1.4.0-rc3 2015-05-29 12:15:13 -07:00
Patrick Wendell 6bf5a42084 Preparing development version 1.4.0-SNAPSHOT 2015-05-28 23:40:27 -07:00
Patrick Wendell f2796816be Preparing Spark release v1.4.0-rc3 2015-05-28 23:40:22 -07:00
Patrick Wendell 119c93af9c Preparing development version 1.4.0-SNAPSHOT 2015-05-28 22:57:31 -07:00
Patrick Wendell 2d97d7a0aa Preparing Spark release v1.4.0-rc3 2015-05-28 22:57:26 -07:00
Patrick Wendell 7c342bdd93 Preparing development version 1.4.0-SNAPSHOT 2015-05-27 22:36:30 -07:00
Patrick Wendell 4983dfc878 Preparing Spark release v1.4.0-rc3 2015-05-27 22:36:23 -07:00
Patrick Wendell 947d700ec8 Preparing development version 1.4.0-SNAPSHOT 2015-05-23 20:13:05 -07:00
Patrick Wendell 03fb26a3e5 Preparing Spark release v1.4.0-rc2 2015-05-23 20:13:00 -07:00
Patrick Wendell f2f74b9b1a Preparing development version 1.4.1-SNAPSHOT 2015-05-23 14:59:37 -07:00
Patrick Wendell 0da7396990 Preparing Spark release v1.4.0-rc2-test 2015-05-23 14:59:31 -07:00
Patrick Wendell 8da8caab17 Preparing development version 1.4.1-SNAPSHOT 2015-05-23 14:46:27 -07:00
Patrick Wendell 8f50218f38 Preparing Spark release 1.4.0-rc2-test 2015-05-23 14:46:23 -07:00
Patrick Wendell 9b37e32c55 Preparing development version 1.4.0-SNAPSHOT 2015-05-20 17:29:00 -07:00
Patrick Wendell 1e458e3553 Preparing Spark release rc-test 2015-05-20 17:28:55 -07:00
pwendell 8d66849862 Preparing development version 1.4.0-SNAPSHOT 2015-05-20 17:26:15 -07:00
pwendell ae29aeaf8e Preparing Spark release rc-test 2015-05-20 17:26:10 -07:00
jenkins 534c787b9f Preparing development version 1.4.0-SNAPSHOT 2015-05-20 16:49:59 -07:00
jenkins 5f4d87f608 Preparing Spark release rc-test 2015-05-20 16:49:54 -07:00
Patrick Wendell 205ed15f29 Preparing development version 1.4.0-SNAPSHOT 2015-05-20 16:30:01 -07:00
Patrick Wendell 09a1c6231e Preparing Spark release rc-test 2015-05-20 16:29:52 -07:00
Patrick Wendell ac3197e1b9 Preparing development version 1.4.1-SNAPSHOT 2015-05-19 09:35:12 +00:00
Patrick Wendell 777a08166f Preparing Spark release v1.4.0-rc1 2015-05-19 09:35:12 +00:00
Patrick Wendell 586ede6b32 Revert "Preparing Spark release v1.4.0-rc1"
This reverts commit 79fb01a3be.
2015-05-19 02:27:14 -07:00
Patrick Wendell e7309ec729 Revert "Preparing development version 1.4.1-SNAPSHOT"
This reverts commit a1d896b85b.
2015-05-19 02:27:07 -07:00
Patrick Wendell a1d896b85b Preparing development version 1.4.1-SNAPSHOT 2015-05-19 07:13:24 +00:00
Patrick Wendell 79fb01a3be Preparing Spark release v1.4.0-rc1 2015-05-19 07:13:24 +00:00
Patrick Wendell b0c63d2413 Revert "Preparing Spark release v1.4.0-rc1"
This reverts commit 38ccef36c1.
2015-05-19 00:10:39 -07:00
Patrick Wendell 198a186ad3 Revert "Preparing development version 1.4.1-SNAPSHOT"
This reverts commit 40190ce226.
2015-05-19 00:10:37 -07:00
Patrick Wendell 40190ce226 Preparing development version 1.4.1-SNAPSHOT 2015-05-19 06:06:41 +00:00
Patrick Wendell 38ccef36c1 Preparing Spark release v1.4.0-rc1 2015-05-19 06:06:40 +00:00
Patrick Wendell 152b0291c0 Revert "Preparing Spark release v1.4.0-rc1"
This reverts commit e8e97e3a63.
2015-05-18 23:06:15 -07:00
Patrick Wendell 4d098bc049 Revert "Preparing development version 1.4.1-SNAPSHOT"
This reverts commit 758ca74bab.
2015-05-18 23:06:13 -07:00
Patrick Wendell 758ca74bab Preparing development version 1.4.1-SNAPSHOT 2015-05-19 05:01:11 +00:00
Patrick Wendell e8e97e3a63 Preparing Spark release v1.4.0-rc1 2015-05-19 05:01:11 +00:00
WangTaoTheTonic 49549d5a1a [SPARK-7031] [THRIFTSERVER] let thrift server take SPARK_DAEMON_MEMORY and SPARK_DAEMON_JAVA_OPTS
We should let Thrift Server take these two parameters as it is a daemon. And it is better to read driver-related configs as an app submited by spark-submit.

https://issues.apache.org/jira/browse/SPARK-7031

Author: WangTaoTheTonic <wangtao111@huawei.com>

Closes #5609 from WangTaoTheTonic/SPARK-7031 and squashes the following commits:

8d3fc16 [WangTaoTheTonic] indent
035069b [WangTaoTheTonic] better code style
d3ddfb6 [WangTaoTheTonic] revert the unnecessary changes in suite
624e652 [WangTaoTheTonic] fix break tests
0565831 [WangTaoTheTonic] fix failed tests
4fb25ed [WangTaoTheTonic] let thrift server take SPARK_DAEMON_MEMORY and SPARK_DAEMON_JAVA_OPTS
2015-05-03 00:47:47 +01:00
Hari Shreedharan b1f4ca82d1 [SPARK-5342] [YARN] Allow long running Spark apps to run on secure YARN/HDFS
Take 2. Does the same thing as #4688, but fixes Hadoop-1 build.

Author: Hari Shreedharan <hshreedharan@apache.org>

Closes #5823 from harishreedharan/kerberos-longrunning and squashes the following commits:

3c86bba [Hari Shreedharan] Import fixes. Import postfixOps explicitly.
4d04301 [Hari Shreedharan] Minor formatting fixes.
b5e7a72 [Hari Shreedharan] Remove reflection, use a method in SparkHadoopUtil to update the token renewer.
7bff6e9 [Hari Shreedharan] Make sure all required classes are present in the jar. Fix import order.
e851f70 [Hari Shreedharan] Move the ExecutorDelegationTokenRenewer to yarn module. Use reflection to use it.
36eb8a9 [Hari Shreedharan] Change the renewal interval config param. Fix a bunch of comments.
611923a [Hari Shreedharan] Make sure the namenodes are listed correctly for creating tokens.
09fe224 [Hari Shreedharan] Use token.renew to get token's renewal interval rather than using hdfs-site.xml
6963bbc [Hari Shreedharan] Schedule renewal in AM before starting user class. Else, a restarted AM cannot access HDFS if the user class tries to.
072659e [Hari Shreedharan] Fix build failure caused by thread factory getting moved to ThreadUtils.
f041dd3 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
42eead4 [Hari Shreedharan] Remove RPC part. Refactor and move methods around, use renewal interval rather than max lifetime to create new tokens.
ebb36f5 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
bc083e3 [Hari Shreedharan] Overload RegisteredExecutor to send tokens. Minor doc updates.
7b19643 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
8a4f268 [Hari Shreedharan] Added docs in the security guide. Changed some code to ensure that the renewer objects are created only if required.
e800c8b [Hari Shreedharan] Restore original RegisteredExecutor message, and send new tokens via NewTokens message.
0e9507e [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
7f1bc58 [Hari Shreedharan] Minor fixes, cleanup.
bcd11f9 [Hari Shreedharan] Refactor AM and Executor token update code into separate classes, also send tokens via akka on executor startup.
f74303c [Hari Shreedharan] Move the new logic into specialized classes. Add cleanup for old credentials files.
2f9975c [Hari Shreedharan] Ensure new tokens are written out immediately on AM restart. Also, pikc up the latest suffix from HDFS if the AM is restarted.
61b2b27 [Hari Shreedharan] Account for AM restarts by making sure lastSuffix is read from the files on HDFS.
62c45ce [Hari Shreedharan] Relogin from keytab periodically.
fa233bd [Hari Shreedharan] Adding logging, fixing minor formatting and ordering issues.
42813b4 [Hari Shreedharan] Remove utils.sh, which was re-added due to merge with master.
0de27ee [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
55522e3 [Hari Shreedharan] Fix failure caused by Preconditions ambiguity.
9ef5f1b [Hari Shreedharan] Added explanation of how the credentials refresh works, some other minor fixes.
f4fd711 [Hari Shreedharan] Fix SparkConf usage.
2debcea [Hari Shreedharan] Change the file structure for credentials files. I will push a followup patch which adds a cleanup mechanism for old credentials files. The credentials files are small and few enough for it to cause issues on HDFS.
af6d5f0 [Hari Shreedharan] Cleaning up files where changes weren't required.
f0f54cb [Hari Shreedharan] Be more defensive when updating the credentials file.
f6954da [Hari Shreedharan] Got rid of Akka communication to renew, instead the executors check a known file's modification time to read the credentials.
5c11c3e [Hari Shreedharan] Move tests to YarnSparkHadoopUtil to fix compile issues.
b4cb917 [Hari Shreedharan] Send keytab to AM via DistributedCache rather than directly via HDFS
0985b4e [Hari Shreedharan] Write tokens to HDFS and read them back when required, rather than sending them over the wire.
d79b2b9 [Hari Shreedharan] Make sure correct credentials are passed to FileSystem#addDelegationTokens()
8c6928a [Hari Shreedharan] Fix issue caused by direct creation of Actor object.
fb27f46 [Hari Shreedharan] Make sure principal and keytab are set before CoarseGrainedSchedulerBackend is started. Also schedule re-logins in CoarseGrainedSchedulerBackend#start()
41efde0 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
d282d7a [Hari Shreedharan] Fix ClientSuite to set YARN mode, so that the correct class is used in tests.
bcfc374 [Hari Shreedharan] Fix Hadoop-1 build by adding no-op methods in SparkHadoopUtil, with impl in YarnSparkHadoopUtil.
f8fe694 [Hari Shreedharan] Handle None if keytab-login is not scheduled.
2b0d745 [Hari Shreedharan] [SPARK-5342][YARN] Allow long running Spark apps to run on secure YARN/HDFS.
ccba5bc [Hari Shreedharan] WIP: More changes wrt kerberos
77914dd [Hari Shreedharan] WIP: Add kerberos principal and keytab to YARN client.
2015-05-01 15:32:09 -05:00
Patrick Wendell e0628f2fae Revert "[SPARK-5342] [YARN] Allow long running Spark apps to run on secure YARN/HDFS"
This reverts commit 6c65da6bb7.
2015-04-30 14:59:20 -07:00
Hari Shreedharan 6c65da6bb7 [SPARK-5342] [YARN] Allow long running Spark apps to run on secure YARN/HDFS
Current Spark apps running on Secure YARN/HDFS would not be able to write data
to HDFS after 7 days, since delegation tokens cannot be renewed beyond that. This
means Spark Streaming apps will not be able to run on Secure YARN.

This commit adds basic functionality to fix this issue. In this patch:
- new parameters are added - principal and keytab, which can be used to login to a KDC
- the client logs in, and then get tokens to start the AM
- the keytab is copied to the staging directory
- the AM waits for 60% of the time till expiry of the tokens and then logs in using the keytab
- each time after 60% of the time, new tokens are created and sent to the executors

Currently, to avoid complicating the architecture, we set the keytab and principal in the
SparkHadoopUtil singleton, and schedule a login. Once the login is completed, a callback is scheduled.

This is being posted for feedback, so I can gather feedback on the general implementation.

There are currently a bunch of things to do:
- [x] logging
- [x] testing - I plan to manually test this soon. If you have ideas of how to add unit tests, comment.
- [x] add code to ensure that if these params are set in non-YARN cluster mode, we complain
- [x] documentation
- [x] Have the executors request for credentials from the AM, so that retries are possible.

Author: Hari Shreedharan <hshreedharan@apache.org>

Closes #4688 from harishreedharan/kerberos-longrunning and squashes the following commits:

36eb8a9 [Hari Shreedharan] Change the renewal interval config param. Fix a bunch of comments.
611923a [Hari Shreedharan] Make sure the namenodes are listed correctly for creating tokens.
09fe224 [Hari Shreedharan] Use token.renew to get token's renewal interval rather than using hdfs-site.xml
6963bbc [Hari Shreedharan] Schedule renewal in AM before starting user class. Else, a restarted AM cannot access HDFS if the user class tries to.
072659e [Hari Shreedharan] Fix build failure caused by thread factory getting moved to ThreadUtils.
f041dd3 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
42eead4 [Hari Shreedharan] Remove RPC part. Refactor and move methods around, use renewal interval rather than max lifetime to create new tokens.
ebb36f5 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
bc083e3 [Hari Shreedharan] Overload RegisteredExecutor to send tokens. Minor doc updates.
7b19643 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
8a4f268 [Hari Shreedharan] Added docs in the security guide. Changed some code to ensure that the renewer objects are created only if required.
e800c8b [Hari Shreedharan] Restore original RegisteredExecutor message, and send new tokens via NewTokens message.
0e9507e [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
7f1bc58 [Hari Shreedharan] Minor fixes, cleanup.
bcd11f9 [Hari Shreedharan] Refactor AM and Executor token update code into separate classes, also send tokens via akka on executor startup.
f74303c [Hari Shreedharan] Move the new logic into specialized classes. Add cleanup for old credentials files.
2f9975c [Hari Shreedharan] Ensure new tokens are written out immediately on AM restart. Also, pikc up the latest suffix from HDFS if the AM is restarted.
61b2b27 [Hari Shreedharan] Account for AM restarts by making sure lastSuffix is read from the files on HDFS.
62c45ce [Hari Shreedharan] Relogin from keytab periodically.
fa233bd [Hari Shreedharan] Adding logging, fixing minor formatting and ordering issues.
42813b4 [Hari Shreedharan] Remove utils.sh, which was re-added due to merge with master.
0de27ee [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
55522e3 [Hari Shreedharan] Fix failure caused by Preconditions ambiguity.
9ef5f1b [Hari Shreedharan] Added explanation of how the credentials refresh works, some other minor fixes.
f4fd711 [Hari Shreedharan] Fix SparkConf usage.
2debcea [Hari Shreedharan] Change the file structure for credentials files. I will push a followup patch which adds a cleanup mechanism for old credentials files. The credentials files are small and few enough for it to cause issues on HDFS.
af6d5f0 [Hari Shreedharan] Cleaning up files where changes weren't required.
f0f54cb [Hari Shreedharan] Be more defensive when updating the credentials file.
f6954da [Hari Shreedharan] Got rid of Akka communication to renew, instead the executors check a known file's modification time to read the credentials.
5c11c3e [Hari Shreedharan] Move tests to YarnSparkHadoopUtil to fix compile issues.
b4cb917 [Hari Shreedharan] Send keytab to AM via DistributedCache rather than directly via HDFS
0985b4e [Hari Shreedharan] Write tokens to HDFS and read them back when required, rather than sending them over the wire.
d79b2b9 [Hari Shreedharan] Make sure correct credentials are passed to FileSystem#addDelegationTokens()
8c6928a [Hari Shreedharan] Fix issue caused by direct creation of Actor object.
fb27f46 [Hari Shreedharan] Make sure principal and keytab are set before CoarseGrainedSchedulerBackend is started. Also schedule re-logins in CoarseGrainedSchedulerBackend#start()
41efde0 [Hari Shreedharan] Merge branch 'master' into kerberos-longrunning
d282d7a [Hari Shreedharan] Fix ClientSuite to set YARN mode, so that the correct class is used in tests.
bcfc374 [Hari Shreedharan] Fix Hadoop-1 build by adding no-op methods in SparkHadoopUtil, with impl in YarnSparkHadoopUtil.
f8fe694 [Hari Shreedharan] Handle None if keytab-login is not scheduled.
2b0d745 [Hari Shreedharan] [SPARK-5342][YARN] Allow long running Spark apps to run on secure YARN/HDFS.
ccba5bc [Hari Shreedharan] WIP: More changes wrt kerberos
77914dd [Hari Shreedharan] WIP: Add kerberos principal and keytab to YARN client.
2015-04-30 13:03:23 -05:00
Iulian Dragos 8aab94d898 [SPARK-4286] Add an external shuffle service that can be run as a daemon.
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.
2015-04-28 12:08:18 -07:00
Masayoshi TSUZUKI 268c419f15 [SPARK-6435] spark-shell --jars option does not add all jars to classpath
Modified to accept double-quotated args properly in spark-shell.cmd.

Author: Masayoshi TSUZUKI <tsudukim@oss.nttdata.co.jp>

Closes #5227 from tsudukim/feature/SPARK-6435-2 and squashes the following commits:

ac55787 [Masayoshi TSUZUKI] removed unnecessary argument.
60789a7 [Masayoshi TSUZUKI] Merge branch 'master' of https://github.com/apache/spark into feature/SPARK-6435-2
1fee420 [Masayoshi TSUZUKI] fixed test code for escaping '='.
0d4dc41 [Masayoshi TSUZUKI] - escaped comman and semicolon in CommandBuilderUtils.java - added random string to the temporary filename - double-quotation followed by `cmd /c` did not worked properly - no need to escape `=` by `^` - if double-quoted string ended with `\` like classpath, the last `\` is parsed as the escape charactor and the closing `"` didn't work properly
2a332e5 [Masayoshi TSUZUKI] Merge branch 'master' into feature/SPARK-6435-2
04f4291 [Masayoshi TSUZUKI] [SPARK-6435] spark-shell --jars option does not add all jars to classpath
2015-04-28 07:56:36 -04:00
Calvin Jia 438859eb7c [SPARK-6122] [CORE] Upgrade tachyon-client version to 0.6.3
This is a reopening of #4867.
A short summary of the issues resolved from the previous PR:

1. HTTPClient version mismatch: Selenium (used for UI tests) requires version 4.3.x, and Tachyon included 4.2.5 through a transitive dependency of its shaded thrift jar. To address this, Tachyon 0.6.3 will promote the transitive dependencies of the shaded jar so they can be excluded in spark.

2. Jackson-Mapper-ASL version mismatch: In lower versions of hadoop-client (ie. 1.0.4), version 1.0.1 is included. The parquet library used in spark sql requires version 1.8+. Its unclear to me why upgrading tachyon-client would cause this dependency to break. The solution was to exclude jackson-mapper-asl from hadoop-client.

It seems that the dependency management in spark-parent will not work on transitive dependencies, one way to make sure jackson-mapper-asl is included with the correct version is to add it as a top level dependency. The best solution would be to exclude the dependency in the modules which require a higher version, but that did not fix the unit tests. Any suggestions on the best way to solve this would be appreciated!

Author: Calvin Jia <jia.calvin@gmail.com>

Closes #5354 from calvinjia/upgrade_tachyon_0.6.3 and squashes the following commits:

0eefe4d [Calvin Jia] Handle httpclient version in maven dependency management. Remove httpclient version setting from profiles.
7c00dfa [Calvin Jia] Set httpclient version to 4.3.2 for selenium. Specify version of httpclient for sql/hive (previously 4.2.5 transitive dependency of libthrift).
9263097 [Calvin Jia] Merge master to test latest changes
dbfc1bd [Calvin Jia] Use Tachyon 0.6.4 for cleaner dependencies.
e2ff80a [Calvin Jia] Exclude the jetty and curator promoted dependencies from tachyon-client.
a3a29da [Calvin Jia] Update tachyon-client exclusions.
0ae6c97 [Calvin Jia] Change tachyon version to 0.6.3
a204df9 [Calvin Jia] Update make distribution tachyon version.
a93c94f [Calvin Jia] Exclude jackson-mapper-asl from hadoop client since it has a lower version than spark's expected version.
a8a923c [Calvin Jia] Exclude httpcomponents from Tachyon
910fabd [Calvin Jia] Update to master
eed9230 [Calvin Jia] Update tachyon version to 0.6.1.
11907b3 [Calvin Jia] Use TachyonURI for tachyon paths instead of strings.
71bf441 [Calvin Jia] Upgrade Tachyon client version to 0.6.0.
2015-04-24 17:57:41 -04:00
Marcelo Vanzin 9717389365 [SPARK-6890] [core] Fix launcher lib work with SPARK_PREPEND_CLASSES.
The fix for SPARK-6406 broke the case where sub-processes are launched
when SPARK_PREPEND_CLASSES is set, because the code now would only add
the launcher's build directory to the sub-process's classpath instead
of the complete assembly.

This patch fixes the problem by having the launch scripts stash the
assembly's location in an environment variable. This is not the prettiest
solution, but it avoids having to plumb that location all the way through
the Worker code that launches executors. The env variable is always
set by the launch scripts, so users cannot override it.

Author: Marcelo Vanzin <vanzin@cloudera.com>

Closes #5504 from vanzin/SPARK-6890 and squashes the following commits:

7aec921 [Marcelo Vanzin] Fix tests.
ff87a60 [Marcelo Vanzin] Merge branch 'master' into SPARK-6890
31d3ce8 [Marcelo Vanzin] [SPARK-6890] [core] Fix launcher lib work with SPARK_PREPEND_CLASSES.
2015-04-14 18:51:39 -07:00
WangTaoTheTonic f63b44a5c2 [SPARK-6894]spark.executor.extraLibraryOptions => spark.executor.extraLibraryPath
https://issues.apache.org/jira/browse/SPARK-6894

cc vanzin

Author: WangTaoTheTonic <wangtao111@huawei.com>

Closes #5506 from WangTaoTheTonic/SPARK-6894 and squashes the following commits:

4b7ced7 [WangTaoTheTonic] spark.executor.extraLibraryOptions => spark.executor.extraLibraryPath
2015-04-14 12:02:11 -07:00
Guancheng (G.C.) Chen e9445b187e [SPARK-6866][Build] Remove duplicated dependency in launcher/pom.xml
JIRA: https://issues.apache.org/jira/browse/SPARK-6866

Remove duplicated dependency of scalatest in launcher/pom.xml since it already inherited the dependency from the parent pom.xml.

Author: Guancheng (G.C.) Chen <chenguancheng@gmail.com>

Closes #5476 from gchen/SPARK-6866 and squashes the following commits:

1ab484b [Guancheng (G.C.) Chen] remove duplicated dependency in launcher/pom.xml
2015-04-12 11:36:41 +01:00