Hi,

Flink has so-called "Slots" to execute tasks (smaller parts of a job) in.
Every TaskManager has n slots. n is set by the configuration value
"taskmanager.numberOfTaskSlots".
In your case, every TaskManager provides one slot. Since you are having 10
TaskManagers, your cluster provides, when started, a total number of 10
slots.

The bin/flink tool allows users to pass the "-p" argument, for the
parallelism. So if you start a WordCount with -p 5, it will use 5 slots. If
the user does not specify the "-p" argument, we use the "
parallelization.degree.default" value. In your case, you've set it to 20
and provided no "-p" argument, hence, your job failed with the exception.

So resolve the issue, either set parallelization.degree.default to "10" or
pass "-p 10" to bin/flink.


Cheers,
Robert


On Thu, Sep 25, 2014 at 9:56 PM, nirvanesque [via Apache Flink (Incubator)
User Mailing List archive.] <[email protected]> wrote:

> Thanks Robert for all the helpful tips!
>
> Yes, of course, I did restart Flink everytime.
> Generally, in our Grid'5000, we reserve some nodes and then run our
> experiments (including installing hadoop, flink, etc).
> During the reservation, all nodes are nfs-ed to the access site, so all
> files & folders are mirrored on each node, no need to scp or rsync.
>
> I usually, reserve 10 nodes.
> Then I install flink on the same nodes as hadoop and the job manager runs
> on the hadoop namenode (master).
> Then I ssh to the job manager node to launch my jobs.
>
> I'm not sure if there was some issue in configuration after the last
> overhaul of the Grid'5000 this Monday.
>
> Anyway, I cleaned up everything, downloaded flink 0.6 and installed on
> Hadoop 1.2.1
> The job manager and task managers start fine.
>
> Then the problem starts when I run a simple command as:
>
> abasu@adonis-10:~$  ./flink/bin/flink run -v
> ./flink/examples/flink-java-examples-0.6-incubating-WordCount.jar
> file:///home/abasu/examples/wordcount/input/gutenberg.txt
> file:///home/abasu/examples/wordcount/output/
> Error: The program execution failed:
> org.apache.flink.runtime.jobmanager.scheduler.SchedulingException: Not
> enough slots to schedule job 72eda81dfd32200015712eaafd609000
>         at
> org.apache.flink.runtime.jobmanager.scheduler.DefaultScheduler.scheduleJob(DefaultScheduler.java:155)
>         at
> org.apache.flink.runtime.jobmanager.JobManager.submitJob(JobManager.java:510)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at org.apache.flink.runtime.ipc.RPC$Server.call(RPC.java:422)
>         at org.apache.flink.runtime.ipc.Server$Handler.run(Server.java:958)
>
> org.apache.flink.client.program.ProgramInvocationException: The program
> execution failed:
> org.apache.flink.runtime.jobmanager.scheduler.SchedulingException: Not
> enough slots to schedule job 72eda81dfd32200015712eaafd609000
>         at
> org.apache.flink.runtime.jobmanager.scheduler.DefaultScheduler.scheduleJob(DefaultScheduler.java:155)
>         at
> org.apache.flink.runtime.jobmanager.JobManager.submitJob(JobManager.java:510)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at org.apache.flink.runtime.ipc.RPC$Server.call(RPC.java:422)
>         at org.apache.flink.runtime.ipc.Server$Handler.run(Server.java:958)
>
>         at org.apache.flink.client.program.Client.run(Client.java:325)
>         at org.apache.flink.client.program.Client.run(Client.java:291)
>         at org.apache.flink.client.program.Client.run(Client.java:285)
>         at
> org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:54)
>         at
> org.apache.flink.example.java.wordcount.WordCount.main(WordCount.java:82)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:606)
>         at
> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:389)
>         at
> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:307)
>         at org.apache.flink.client.program.Client.run(Client.java:244)
>         at
> org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:332)
>         at org.apache.flink.client.CliFrontend.run(CliFrontend.java:319)
>         at
> org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:930)
>         at org.apache.flink.client.CliFrontend.main(CliFrontend.java:954)
>
>
> The conf file is as follows (with your suggestions)
> No default conf files in the conf folder.
>
>
> #==============================================================================
> # Common
>
> #==============================================================================
> # abasu : modified for master node
> jobmanager.rpc.address: adonis-10.grenoble.grid5000.fr
>
> jobmanager.rpc.port: 6123
>
> jobmanager.heap.mb: 1024
>
> taskmanager.heap.mb: 8192
>
>
> # abasu : modified from -1 according to configuration pages
> taskmanager.numberOfTaskSlots: 1
>
> # abasu : modified from 1 according to advice of Robert Metzger on
> configuration
> parallelization.degree.default: 20
>
>
> #==============================================================================
> # Web Frontend
>
> #==============================================================================
>
> jobmanager.web.port: 8081
>
> webclient.port: 8080
>
>
> #==============================================================================
> # Advanced
>
> #==============================================================================
>
> # The number of buffers for the network stack.
> #
> # taskmanager.network.numberOfBuffers: 2048
>
> # Directories for temporary files.
> #
> # Add a delimited list for multiple directories, using the system directory
> # delimiter (colon ':' on unix) or a comma, e.g.:
> #     /data1/tmp:/data2/tmp:/data3/tmp
> #
> # Note: Each directory entry is read from and written to by a different I/O
> # thread. You can include the same directory multiple times in order to
> create
> # multiple I/O threads against that directory. This is for example
> relevant for
> # high-throughput RAIDs.
> #
> # If not specified, the system-specific Java temporary directory
> (java.io.tmpdir
> # property) is taken.
> #
> # taskmanager.tmp.dirs: /tmp
>
> # Path to the Hadoop configuration directory.
> #
> # This configuration is used when writing into HDFS. Unless specified
> otherwise,
> # HDFS file creation will use HDFS default settings with respect to
> block-size,
> # replication factor, etc.
> #
> # You can also directly specify the paths to hdfs-default.xml and
> hdfs-site.xml
> # via keys 'fs.hdfs.hdfsdefault' and 'fs.hdfs.hdfssite'.
> #
> # abasu : uncommented
> fs.hdfs.hadoopconf: /opt/hadoop/conf/
>
>
>
> Thanks in advance for your help.
> Seems like I'm going a few steps backward now.
> FYI, Hadoop runs well, tested Terasort.
>
> Best!
> Anirvan
>
>
>
>
>
>
>
> Le 25/09/2014 16:46, rmetzger0 [via Apache Flink (Incubator) User Mailing
> List archive.] a écrit :
>
> Hi,
>
>  the configuration file looks correct now.
>
>  Did you restart Flink after you updated the configuration?
> Also, the config needs to be changed on all cluster nodes (we use a NFS
> shared folder, you can also use rsync to synchronize the files of the
> "master" (JobManager) to all the "worker" nodes (TaskManager).
> Are there other configuration files in the conf/ directory? I think our
> code is loading all configuration files by their extension. So if there is
> a flink-conf-defaults.yaml in the same dir, it might still contain the
> erroneous values.
>
>
>  Regarding your suggestion:
> We already implemented part of your suggestion: if the user sets the dop
> to -1, we'll print a warning and set the DOP to 1.
> We discussed setting the "numberOfTaskSlots" to the number of CPUs by
> default, but that would basically mean that Flink is grabbing all the
> resources on the cluster. We therefore decided for being conservative and
> use only one core by default.
>
>  By the way, I would recommend giving the Flink TaskManager (and also the
> jobManager) a bit more memory.
>
>  Your current settings are:
>
>  jobmanager.heap.mb: 256
> taskmanager.heap.mb: 512
>
>  These are MBs, so the TaskManagers will only have 512 MB. If your
> cluster nodes have, say 20GB, set the TaskManager heap space to 15000. This
> will lead to huge performance improvements for your jobs!
>
>  I hope restarting resolves the issue.
>
>  Best,
> Robert
>
>
> On Thu, Sep 25, 2014 at 4:26 PM, nirvanesque [via Apache Flink (Incubator)
> User Mailing List archive.] <[hidden email]
> <http://user/SendEmail.jtp?type=node&node=114&i=0>> wrote:
>
>> Robert, Stephan and the "powers that be" ...
>>
>> Thanks for your valuable inputs.
>> I tried them a few times today and here's the output and the config infos.
>>
>> Please see my suggestions at the end also.
>>
>> Looking forward to your helpful replies.
>>
>>
>> The failure output :
>> [QUOTE]
>> abasu@edel-59:~$ ./flink/bin/flink run -v
>> ./flink/examples/flink-java-examples-0.6-incubating-WebLogAnalysis.jar
>> file:///home/abasu/examples/Weblogs/documents
>> file:///home/abasu/examples/Weblogs/ranks
>> file:///home/abasu/examples/Weblogs/visits
>> file:///home/abasu/examples/Weblogs/result
>>
>> Error: The main method caused an error.
>> org.apache.flink.client.program.ProgramInvocationException: The main
>> method caused an error.
>>         at
>> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:404)
>>         at
>> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:307)
>>         at org.apache.flink.client.program.Client.run(Client.java:244)
>>         at
>> org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:332)
>>         at org.apache.flink.client.CliFrontend.run(CliFrontend.java:319)
>>         at
>> org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:930)
>>         at org.apache.flink.client.CliFrontend.main(CliFrontend.java:954)
>> Caused by: java.lang.IllegalArgumentException
>>         at
>> org.apache.flink.compiler.dag.OptimizerNode.setDegreeOfParallelism(OptimizerNode.java:414)
>>         at
>> org.apache.flink.compiler.PactCompiler$GraphCreatingVisitor.preVisit(PactCompiler.java:772)
>>         at
>> org.apache.flink.compiler.PactCompiler$GraphCreatingVisitor.preVisit(PactCompiler.java:616)
>>         at
>> org.apache.flink.api.common.operators.base.GenericDataSinkBase.accept(GenericDataSinkBase.java:287)
>>         at org.apache.flink.api.common.Plan.accept(Plan.java:281)
>>         at
>> org.apache.flink.compiler.PactCompiler.compile(PactCompiler.java:511)
>>         at
>> org.apache.flink.compiler.PactCompiler.compile(PactCompiler.java:460)
>>         at
>> org.apache.flink.client.program.Client.getOptimizedPlan(Client.java:196)
>>         at
>> org.apache.flink.client.program.Client.getOptimizedPlan(Client.java:209)
>>         at org.apache.flink.client.program.Client.run(Client.java:285)
>>         at
>> org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:54)
>>         at
>> org.apache.flink.example.java.relational.WebLogAnalysis.main(WebLogAnalysis.java:148)
>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>         at
>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>         at
>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>         at
>> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:389)
>>         ... 6 more
>>  abasu@edel-59:~$
>> [/QUOTE]
>>
>>
>> The config file flink-conf.yaml (changed only in lines below "abasu" :
>> [QUOTE]
>>
>> #==============================================================================
>> # Common
>>
>> #==============================================================================
>> # abasu : modified for master node
>> jobmanager.rpc.address: edel-59.grenoble.grid5000.fr
>>
>> jobmanager.rpc.port: 6123
>>
>> jobmanager.heap.mb: 256
>>
>> taskmanager.heap.mb: 512
>>
>> # abasu : modified from -1 according to configuration pages
>> taskmanager.numberOfTaskSlots: 1
>>
>> # abasu : modified from 1 according to advice of Robert Metzger on
>> configuration
>> parallelization.degree.default: 20
>>
>>
>> #==============================================================================
>> # Web Frontend
>>
>> #==============================================================================
>>
>> jobmanager.web.port: 8081
>>
>> webclient.port: 8080
>>
>>
>> #==============================================================================
>> # Advanced
>>
>> #==============================================================================
>>
>> # The number of buffers for the network stack.
>> #
>> # taskmanager.network.numberOfBuffers: 2048
>>
>> # Directories for temporary files.
>> #
>> # Add a delimited list for multiple directories, using the system
>> directory
>> # delimiter (colon ':' on unix) or a comma, e.g.:
>> #     /data1/tmp:/data2/tmp:/data3/tmp
>> #
>> # Note: Each directory entry is read from and written to by a different
>> I/O
>> # thread. You can include the same directory multiple times in order to
>> create
>> # multiple I/O threads against that directory. This is for example
>> relevant for
>> # high-throughput RAIDs.
>> #
>> # If not specified, the system-specific Java temporary directory
>> (java.io.tmpdir
>> # property) is taken.
>> #
>> # taskmanager.tmp.dirs: /tmp
>>
>> # Path to the Hadoop configuration directory.
>> #
>> # This configuration is used when writing into HDFS. Unless specified
>> otherwise,
>> # HDFS file creation will use HDFS default settings with respect to
>> block-size,
>> # replication factor, etc.
>> #
>> # You can also directly specify the paths to hdfs-default.xml and
>> hdfs-site.xml
>> # via keys 'fs.hdfs.hdfsdefault' and 'fs.hdfs.hdfssite'.
>> #
>> # abasu : uncommented
>> fs.hdfs.hadoopconf: /opt/hadoop/conf/
>> [/QUOTE]
>>
>>
>> A suggestion:
>> For reading parameters from conf files, especially for
>> "parallelization.degree.default" and may be for
>> "taskmanager.numberOfTaskSlots" would it be possible to have the following
>> (if not already implemented):
>> If set to a positive value, the Job manager will use these values
>> explicitly set by the user.
>> If set to -1, the Jobmanager reads the # of nodes used and the # of cores
>> in each node; then it does a simple arithmetic to calculate the degree of
>> parallelisation, also perhaps the number of Tasks ...
>> Of course, the user is free to use a different configuration using the
>> "-m" option.
>>
>> What do you think ?
>>
>> Thanks in advance,
>> Anirvan
>>
>>
>>
>>
>>
>> Le 24/09/2014 18:59, Stephan Ewen [via Apache Flink (Incubator) User
>> Mailing List archive.] a écrit :
>>
>> I get a similar error when I use a negative value for the default
>> parallelism in the flink-config.yaml
>>
>>  I'll push a patch that gives better error messages and sanity checks
>> the config value, prints a warning, and falls back to DOP 1 if the config
>> is invalid and no manual value is provided.
>>
>>  Stephan
>>
>>
>> On Wed, Sep 24, 2014 at 5:48 PM, rmetzger0 <[hidden email]
>> <http://user/SendEmail.jtp?type=node&node=106&i=0>> wrote:
>>
>>> Hi,
>>>
>>>  this looks like a minor issue in your flink configuration.
>>> Can you have a look into your config (in the conf/flink-conf.yaml file)
>>> and tell me the value of the "parallelization.degree.default" property?
>>> If it is set to 0 or a negative value, thats the source of the issue.
>>> Set it to something higher (I recommend numOfNodes*numOfCoresPerNode).
>>>
>>>  But I have to admit that our error reporting here is not very helpful,
>>> we'll improve that...
>>>
>>>
>>>  Cheers,
>>> Robert
>>>
>>>
>>> On Wed, Sep 24, 2014 at 4:23 PM, nirvanesque [via Apache Flink
>>> (Incubator) User Mailing List archive.] <[hidden email]
>>> <http://user/SendEmail.jtp?type=node&node=103&i=0>> wrote:
>>>
>>>> Hello robert,
>>>>
>>>> Apologies for getting back to you on this one :-(
>>>> Es tut mir wirklich Leid!
>>>>
>>>> I've been trying today several times in vain this programme, and
>>>> following is the error output :
>>>>
>>>> [QUOTE]
>>>> abasu@edel-4:~$ ./flink/bin/flink run -v
>>>> flink/examples/flink-java-examples-0.6-incubating-WebLogAnalysis.jar
>>>> file:///home/abasu/examples/Weblogs/documents
>>>> file:///home/abasu/examples/Weblogs/ranks
>>>> file:///home/abasu/examples/Weblogs/visits
>>>> file:///home/abasu/examples/Weblogs/results
>>>> Error: The main method caused an error.
>>>> org.apache.flink.client.program.ProgramInvocationException: The main
>>>> method caused an error.
>>>>         at
>>>> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:404)
>>>>         at
>>>> org.apache.flink.client.program.PackagedProgram.invokeInteractiveModeForExecution(PackagedProgram.java:307)
>>>>         at org.apache.flink.client.program.Client.run(Client.java:244)
>>>>         at
>>>> org.apache.flink.client.CliFrontend.executeProgram(CliFrontend.java:332)
>>>>         at org.apache.flink.client.CliFrontend.run(CliFrontend.java:319)
>>>>         at
>>>> org.apache.flink.client.CliFrontend.parseParameters(CliFrontend.java:930)
>>>>         at
>>>> org.apache.flink.client.CliFrontend.main(CliFrontend.java:954)
>>>> Caused by: java.lang.IllegalArgumentException
>>>>         at
>>>> org.apache.flink.compiler.dag.OptimizerNode.setDegreeOfParallelism(OptimizerNode.java:414)
>>>>         at
>>>> org.apache.flink.compiler.PactCompiler$GraphCreatingVisitor.preVisit(PactCompiler.java:772)
>>>>         at
>>>> org.apache.flink.compiler.PactCompiler$GraphCreatingVisitor.preVisit(PactCompiler.java:616)
>>>>         at
>>>> org.apache.flink.api.common.operators.base.GenericDataSinkBase.accept(GenericDataSinkBase.java:287)
>>>>         at org.apache.flink.api.common.Plan.accept(Plan.java:281)
>>>>         at
>>>> org.apache.flink.compiler.PactCompiler.compile(PactCompiler.java:511)
>>>>         at
>>>> org.apache.flink.compiler.PactCompiler.compile(PactCompiler.java:460)
>>>>         at
>>>> org.apache.flink.client.program.Client.getOptimizedPlan(Client.java:196)
>>>>         at
>>>> org.apache.flink.client.program.Client.getOptimizedPlan(Client.java:209)
>>>>         at org.apache.flink.client.program.Client.run(Client.java:285)
>>>>         at
>>>> org.apache.flink.client.program.ContextEnvironment.execute(ContextEnvironment.java:54)
>>>>         at
>>>> org.apache.flink.example.java.relational.WebLogAnalysis.main(WebLogAnalysis.java:148)
>>>>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>         at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>>>>         at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>>>>         at java.lang.reflect.Method.invoke(Method.java:606)
>>>>         at
>>>> org.apache.flink.client.program.PackagedProgram.callMainMethod(PackagedProgram.java:389)
>>>>         ... 6 more
>>>> abasu@edel-4:~$
>>>>
>>>> [/QUOTE]
>>>>
>>>>
>>>> I'm using Flink version 0.6 on a cluster of 10 nodes.
>>>> Job launched from Job manager node.
>>>>
>>>> As per your instructions, I've used the set for <<documents>> <<ranks>>
>>>> <<visits>> <<results>>
>>>> that I downloaded from your scratch tree branch.
>>>>
>>>> It seems that the main function fails because of other reasons (even
>>>> before entering the programme logic).
>>>> I'm trying to break my head on the exact reason ....
>>>>
>>>> If you could help me in this direction ... ?
>>>>
>>>> Thanks a million in advance,
>>>> Anirvan
>>>>
>>>>
>>>> Le 23/09/2014 17:22, rmetzger0 [via Apache Flink (Incubator) User
>>>> Mailing List archive.] a écrit :
>>>>
>>>> Hi,
>>>>
>>>>  you have to use the "WebLogDataGenerator" found here:
>>>> https://github.com/apache/incubator-flink/blob/master/flink-examples/flink-java-examples/src/main/java/org/apache/flink/examples/java/relational/util/WebLogDataGenerator.java
>>>>
>>>>  It accepts two arguments, the number of documents and visits.
>>>> The generated files are located in /tmp/documents /tmp/ranks and
>>>> /tmp/visits.
>>>> I've generated some sample data for you, located here:
>>>> https://github.com/rmetzger/scratch/tree/weblogdataexample/weblog
>>>>
>>>>
>>>>  Best,
>>>> Robert
>>>>
>>>>
>>>> On Tue, Sep 23, 2014 at 4:05 PM, nirvanesque [via Apache Flink
>>>> (Incubator) User Mailing List archive.] <[hidden email]
>>>> <http://user/SendEmail.jtp?type=node&node=100&i=0>> wrote:
>>>>
>>>>> Hello Robert,
>>>>>
>>>>> Thanks as usual for all your help with the information.
>>>>>
>>>>> I'm trying in vain to create the different input files from the
>>>>> program source code but running into difficulties.
>>>>>
>>>>> Could you (or anyone else) please post here samples of the 4 inputs
>>>>> that are required to run this program ?
>>>>>
>>>>> Thanks in advance,
>>>>> Anirvan
>>>>>
>>>>> Le 09/09/2014 23:54, rmetzger0 [via Apache Flink (Incubator) User
>>>>> Mailing List archive.] a écrit :
>>>>>
>>>>> Hi Anirvan,
>>>>>
>>>>> sorry for the late response. You've posted the question to Nabble,
>>>>> which is only a mirror of our actual mailing list at [hidden email]
>>>>> <http://user/SendEmail.jtp?type=node&node=99&i=0>. Sadly, the message
>>>>> is not automatically posted to the apache list because the apache server 
>>>>> is
>>>>> rejecting the mails from nabble.
>>>>>  I've already asked and there is no way to change this behavior.
>>>>> So I actually saw the two messages you posted here by accident.
>>>>>
>>>>> Regarding your actual question:
>>>>> - The command line arguments for the WebLogAnalysis example are:
>>>>>    "WebLogAnalysis <documents path> <ranks path> <visits path> <result
>>>>> path>"
>>>>>
>>>>> - Regarding the "info -d" command. I think its an artifact from our
>>>>> old java API. I've filed an issue in JIRA:
>>>>> https://issues.apache.org/jira/browse/FLINK-1095 Lets see how we
>>>>> resolve it. Thanks for reporting this!
>>>>>
>>>>> You can find the source code of all of our examples in the source
>>>>> release of Flink (in the flink-examples/flink-java-examples project. You
>>>>> can also access the source (and hence the examples) through GitHub:
>>>>> https://github.com/apache/incubator-flink/blob/master/flink-examples/flink-java-examples/src/main/java/org/apache/flink/example/java/relational/WebLogAnalysis.java.
>>>>>
>>>>>
>>>>> To build the examples, you can run: "mvn clean package -DskipTests" in
>>>>> the "flink-examples/flink-java-examples" directory. This will re-build
>>>>> them.
>>>>>
>>>>> If you don't want to import the whole Flink project just for playing
>>>>> around with the examples, you can also create an empty maven project. This
>>>>> script:
>>>>> curl
>>>>> https://raw.githubusercontent.com/apache/incubator-flink/master/flink-quickstart/quickstart.sh
>>>>>  |
>>>>> bash
>>>>>
>>>>> will automatically set everything up for you. Just import the
>>>>> "quickstart" project into Eclipse or IntelliJ. It will download all
>>>>> dependencies and package everything correctly. If you want to use an
>>>>> example there, just copy the Java file into the "quickstart" project.
>>>>>
>>>>> The examples are indeed a very good way to learn how to write Flink
>>>>> jobs.
>>>>>
>>>>> Please continue asking if you have further questions!
>>>>>
>>>>> Best,
>>>>> Robert
>>>>>
>>>>>
>>>>>  ------------------------------
>>>>>  If you reply to this email, your message will be added to the
>>>>> discussion below:
>>>>>
>>>>> http://apache-flink-incubator-user-mailing-list-archive.2336050.n4.nabble.com/Looking-for-instructions-source-for-flink-java-examples-0-6-incubating-WebLogAnalysis-jar-tp66p67.html
>>>>>  To unsubscribe from Looking for instructions & source for
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