Somehow appending the maven-checkstyle-plugin at the end of the pom.xml changed the order
of the maven-assembly-plugin and the maven-shade-plugin in the package phase. This breaks
things since the shade plugin has to run before the assembly plugin to build the fat-jar.
Specifying the checkstyle-plugin before the maven-shade-plugin resolves the issue.

This closes #4042.

This closes #4031

This is more tedious/manual than setting it to 'provided' once, but it
is also correct.

For example, in the case of Hadoop 2.3, having 'flink-shaded-hadoop2' as 'provided'
removes other needed dependencies as well, such as 'org.codehaus.jackson' from avro.

Use scala.binary.version as defined in the parent POM and remove the
script to swap scala version identifiers.

This closes #3800

This closes #3736.

Instead, allow the configuration with the following three new (more flexible)
parameters:
 * "taskmanager.network.memory.fraction": fraction of JVM memory to use for network buffers (default: 0.1)
 * "taskmanager.network.memory.min": minimum memory size for network buffers (default: 64 MB)
 * "taskmanager.network.memory.max": maximum memory size for network buffers (default: 1 GB)

This closes #3721

This closes #3604

This closes #3666.

This closes #2460.

The opt directory should be reserved for Flink JARs which users may
optionally move to lib to be loaded by the runtime. flink-gelly-examples
is a user program so is moved to the examples folder.

This closes #3691

If "<flink-dir>/build-target" already existed, running 'mvn package' for
flink-dist would create a symbolic link inside "<flink-dir>/build-target"
instead of replacing that symlink. This commit fixes this behaviour of 'ln -sf'
by adding the --no-dereference parameter.

This closes #3331

This also removes gelly-examples from 'opt' assembly

Package the Flink connectors, metrics, and libraries into subdirectories
of a new opt directory in the release/snapshot tarballs.

This closes #3014

Currently, every project in Flink has a hard (compile scope) dependency on the jsr305, slf4j, and log4j
artifacts. That way they are pulled into every fat jar, including user fat jars as soon as they refer to
a connector or library.

This commit changes the behavior in two ways:

  1. It removes the concrete logger dependencies from the root pom file. Instead, it adds them to the
     'flink-core' project. That way, all modules that refer to 'flink-core' will have those dependencies
     as well, but the projects that have 'flink-core' as provided (connectors, libraries, user programs,
     etc) will have those dependencies transitively as provided as well.

  2. The commit overrides the slf4j and jsr305 dependencies in the parents of 'flink-connectors',
     'flink-libraries', and 'flink-metrics' and sets the to 'provided'. That way all core projects
     pull the logger classes, but all projects that are not part of flink-dist (and rather bundled
     in fat jars) will not bundle these dependencies again.

The flink-dist puts the dependencies into the fat jar (slf4j, jsr305) or the lib folder (log4j).

This closes #2850

This also now packages the RocksDB state backend into the Flink distribution

This closes #2482

This adds back the link 'build-target' which points to the final build
assembly in 'flink-dist/target/'.

This closes #2620

On Windows, the plugin downloads and executes code from the author's
web site. The downloaded file is not signed in the same way as Maven
artifacts from Maven central which have to be signed with the
developer's key. This could be a potential target for attackers.

This closes #2586

Implemented Mesos AppMaster including:
- runners for AppMaster and TaskManager
- MesosFlinkResourceManager as a Mesos framework
- ZK persistent storage for Mesos tasks
- reusable scheduler actors for:
  - offer handling using Netflix Fenzo (LaunchCoordinator)
  - reconciliation (ReconciliationCoordinator)
  - task monitoring (TaskMonitor)
  - connection monitoring (ConnectionMonitor)
- lightweight HTTP server to serve artifacts to the Mesos fetcher (ArtifactServer)
- scenario-based logging for:
  - connectivity issues
  - offer handling (receive, process, decline, rescind, accept)
- incorporated FLINK-4152, FLINK-3904, FLINK-4141, FLINK-3675, FLINK-4166

This closes #2309

This closes #2324

- moved user-facing API to 'flink-metrics/flink-metrics-core'
- moved JMXReporter to 'flink-metrics/flink-metrics-jmx'
- moved remaining metric classes to 'flink-runtime'

This closes #2226

This closes #2042

This ensures that all properties of the root pom are properly
resolved by running the Shade plugin. Thus, our root pom does not have
to depend on a Scala version just because it holds the Scala version
properties.

This closes #1755

- add suffixes
- adapt change-scala-version script

This closes #1529.

[FLINK-3195] [examples] Consolidate batch examples into one project, unify batch and streaming examples under on parent project

This closes #1409

0.10-SNAPSHOT continues on branch release-0.10

This closes #1259

Update Scala 2.11 version and jline dependency.

This closes #1197