Hi Shekar, Since you are running local mode, you must have the libs in the directory such as *deploy/samza/lib*. Can you see the slf4j-log4j12-1.6.2.jar there? (not the tar.gz). I ask this is because sometimes people forget to tar -xvf after they add dependencies and recompile, while the local mode reads the *deploy/samz*a, instead of the tar.gz file. Thank you.
Cheers, Fang, Yan [email protected] +1 (206) 849-4108 On Wed, Sep 3, 2014 at 2:59 PM, Shekar Tippur <[email protected]> wrote: > I do see this > > lib/slf4j-log4j12-1.6.2.jar > > In the tgz file. Also, this message seem to me more of a noise. > > I am not sure if we are getting sidetracked on this. > > In the file WikipediaFeedStreamTask.java, I changed log.info to > System.out.println - thinking that this should throw the message to the > console. > > Is this the right place to trap the incoming message? > > > $ cat > > samza-wikipedia/src/main/java/samza/examples/wikipedia/task/WikipediaFeedStreamTask.java > > /* > > * Licensed to the Apache Software Foundation (ASF) under one > > * or more contributor license agreements. See the NOTICE file > > * distributed with this work for additional information > > * regarding copyright ownership. The ASF licenses this file > > * to you under the Apache License, Version 2.0 (the > > * "License"); you may not use this file except in compliance > > * with the License. You may obtain a copy of the License at > > * > > * http://www.apache.org/licenses/LICENSE-2.0 > > * > > * Unless required by applicable law or agreed to in writing, > > * software distributed under the License is distributed on an > > * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY > > * KIND, either express or implied. See the License for the > > * specific language governing permissions and limitations > > * under the License. > > */ > > > package samza.examples.wikipedia.task; > > > import java.util.Map; > > import org.apache.samza.system.IncomingMessageEnvelope; > > import org.apache.samza.system.OutgoingMessageEnvelope; > > import org.apache.samza.system.SystemStream; > > import org.apache.samza.task.MessageCollector; > > import org.apache.samza.task.StreamTask; > > import org.apache.samza.task.TaskCoordinator; > > import samza.examples.wikipedia.system.WikipediaFeed.WikipediaFeedEvent; > > > /** > > * This task is very simple. All it does is take messages that it receives, > and > > * sends them to a Kafka topic called wikipedia-raw. > > */ > > public class WikipediaFeedStreamTask implements StreamTask { > > private static final SystemStream OUTPUT_STREAM = new > SystemStream("kafka", "wikipedia-raw"); > > > @Override > > public void process(IncomingMessageEnvelope envelope, MessageCollector > collector, TaskCoordinator coordinator) { > > Map<String, Object> outgoingMap = > WikipediaFeedEvent.toMap((WikipediaFeedEvent) envelope.getMessage()); > > System.out.println(envelope.getMessage().toString()); > > collector.send(new OutgoingMessageEnvelope(OUTPUT_STREAM, > outgoingMap)); > > } > > } > > > > > On Wed, Sep 3, 2014 at 2:48 PM, Chris Riccomini < > [email protected]> wrote: > > > Hey Shekar, > > > > Sorry that you're having such a tough time with this. I'll keep trying to > > help as best I can. > > > > Do you see slf4j-log4j12 in your job's .tgz file? > > > > Cheers, > > Chris > > > > On 9/3/14 2:46 PM, "Shekar Tippur" <[email protected]> wrote: > > > > >Chris, > > > > > >I have added the below dependencies and I still get the same message. > > > > > > > > > <dependency> > > > > > > <groupId>org.slf4j</groupId> > > > > > > <artifactId>slf4j-api</artifactId> > > > > > > <version>1.7.7</version> > > > > > > </dependency> > > > > > > <dependency> > > > > > > <groupId>org.slf4j</groupId> > > > > > > <artifactId>slf4j-log4j12</artifactId> > > > > > > <version>1.5.6</version> > > > > > > </dependency> > > > > > > > > >On Wed, Sep 3, 2014 at 9:01 AM, Chris Riccomini < > > >[email protected]> wrote: > > > > > >> Hey Shekar, > > >> > > >> The SLF4J stuff is saying that you don't have an slf4j binding on your > > >> classpath. Try adding slf4j-log4j as a runtime dependency on your > > >>project. > > >> > > >> Cheers, > > >> Chris > > >> > > >> On 9/2/14 3:24 PM, "Shekar Tippur" <[email protected]> wrote: > > >> > > >> >Chris , > > >> > > > >> >In the current state, I just want Samza to connect to 127.0.0.1. > > >> > > > >> >I have set YARN_HOME to > > >> > > > >> >$ echo $YARN_HOME > > >> > > > >> >/home/ctippur/hello-samza/deploy/yarn > > >> > > > >> >I still dont see anything on hadoop console. > > >> > > > >> > Also, I see this during startup > > >> > > > >> > > > >> >SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". > > >> > > > >> >SLF4J: Defaulting to no-operation (NOP) logger implementation > > >> > > > >> >SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for > > >>further > > >> >details. > > >> > > > >> >SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". > > >> > > > >> >SLF4J: Defaulting to no-operation (NOP) logger implementation > > >> > > > >> >SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for > > >>further > > >> >details. > > >> > > > >> >- Shekar > > >> > > > >> > > > >> >On Tue, Sep 2, 2014 at 2:20 PM, Chris Riccomini < > > >> >[email protected]> wrote: > > >> > > > >> >> Hey Shekar, > > >> >> > > >> >> Ah ha. In that case, do you expect your SamzaContainer to try to > > >>connect > > >> >> to the RM at 127.0.0.1, or do you expect it to try to connect to > some > > >> >> remote RM? If you expect it to try and connect to a remote RM, it's > > >>not > > >> >> doing that. Perhaps because YARN_HOME isn't set. > > >> >> > > >> >> If you go to your RM's web interface, how many active nodes do you > > >>see > > >> >> listed? > > >> >> > > >> >> Cheers, > > >> >> Chris > > >> >> > > >> >> On 9/2/14 2:17 PM, "Shekar Tippur" <[email protected]> wrote: > > >> >> > > >> >> >Chris .. > > >> >> > > > >> >> >I am using a rhel server to host all the components (Yarn, kafka, > > >> >>samza). > > >> >> >I > > >> >> >dont have ACLs open to wikipedia. > > >> >> >I am following .. > > >> >> > > > >> >> > > >> >> > > >> > > >> > > > http://samza.incubator.apache.org/learn/tutorials/latest/run-hello-samza- > > >> >>w > > >> >> >ithout-internet.html > > >> >> > > > >> >> >- Shekar > > >> >> > > > >> >> > > > >> >> > > > >> >> >On Tue, Sep 2, 2014 at 2:13 PM, Chris Riccomini < > > >> >> >[email protected]> wrote: > > >> >> > > > >> >> >> Hey Shekar, > > >> >> >> > > >> >> >> Can you try changing that to: > > >> >> >> > > >> >> >> http://127.0.0.1:8088/cluster > > >> >> >> > > >> >> >> > > >> >> >> And see if you can connect? > > >> >> >> > > >> >> >> Cheers, > > >> >> >> Chris > > >> >> >> > > >> >> >> On 9/2/14 1:21 PM, "Shekar Tippur" <[email protected]> wrote: > > >> >> >> > > >> >> >> >Other observation is .. > > >> >> >> > > > >> >> >> >http://10.132.62.185:8088/cluster shows that no applications > are > > >> >> >>running. > > >> >> >> > > > >> >> >> >- Shekar > > >> >> >> > > > >> >> >> > > > >> >> >> > > > >> >> >> > > > >> >> >> >On Tue, Sep 2, 2014 at 1:15 PM, Shekar Tippur < > [email protected] > > > > > >> >> >>wrote: > > >> >> >> > > > >> >> >> >> Yarn seem to be running .. > > >> >> >> >> > > >> >> >> >> yarn 5462 0.0 2.0 1641296 161404 ? Sl Jun20 > > >>95:26 > > >> >> >> >> /usr/java/jdk1.6.0_31/bin/java -Dproc_resourcemanager > -Xmx1000m > > >> >> >> >> -Dhadoop.log.dir=/var/log/hadoop-yarn > > >> >> >> >>-Dyarn.log.dir=/var/log/hadoop-yarn > > >> >> >> >> -Dhadoop.log.file=yarn-yarn-resourcemanager-pppdc9prd2y2.log > > >> >> >> >> -Dyarn.log.file=yarn-yarn-resourcemanager-pppdc9prd2y2.log > > >> >> >> >> -Dyarn.home.dir=/usr/lib/hadoop-yarn > > >> >> >> >>-Dhadoop.home.dir=/usr/lib/hadoop-yarn > > >> >> >> >> -Dhadoop.root.logger=INFO,RFA -Dyarn.root.logger=INFO,RFA > > >> >> >> >> -Djava.library.path=/usr/lib/hadoop/lib/native -classpath > > >> >> >> >> > > >> >> >> > > >> >> > > >> > > > >>>>>>>>/etc/hadoop/conf:/etc/hadoop/conf:/etc/hadoop/conf:/usr/lib/hadoop/ > > >>>>>>>>li > > >> >>>>>>b/ > > >> >> >>>>*: > > >> >> >> > > >> >> > > >> > > > >>>>>>>>/usr/lib/hadoop/.//*:/usr/lib/hadoop-hdfs/./:/usr/lib/hadoop-hdfs/l > > >>>>>>>>ib > > >> >>>>>>/* > > >> >> >>>>:/ > > >> >> >> > > >> >> > > >> > > > >>>>>>>>usr/lib/hadoop-hdfs/.//*:/usr/lib/hadoop-yarn/lib/*:/usr/lib/hadoop > > >>>>>>>>-y > > >> >>>>>>ar > > >> >> >>>>n/ > > >> >> >> > > >> >> > > >> > > > >>>>>>>>.//*:/usr/lib/hadoop-mapreduce/lib/*:/usr/lib/hadoop-mapreduce/.//* > > >>>>>>>>:/ > > >> >>>>>>us > > >> >> >>>>r/ > > >> >> >> > > >> >> > > >> > > > >>>>>>>>lib/hadoop-yarn/.//*:/usr/lib/hadoop-yarn/lib/*:/etc/hadoop/conf/rm > > >>>>>>>>-c > > >> >>>>>>on > > >> >> >>>>fi > > >> >> >> >>g/log4j.properties > > >> >> >> >> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager > > >> >> >> >> > > >> >> >> >> I can tail kafka topic as well .. > > >> >> >> >> > > >> >> >> >> deploy/kafka/bin/kafka-console-consumer.sh --zookeeper > > >> >> >>localhost:2181 > > >> >> >> >>--topic wikipedia-raw > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> On Tue, Sep 2, 2014 at 1:04 PM, Chris Riccomini < > > >> >> >> >> [email protected]> wrote: > > >> >> >> >> > > >> >> >> >>> Hey Shekar, > > >> >> >> >>> > > >> >> >> >>> It looks like your job is hanging trying to connect to the > RM > > >>on > > >> >> >>your > > >> >> >> >>> localhost. I thought that you said that your job was running > > >>in > > >> >> >>local > > >> >> >> >>> mode. If so, it should be using the LocalJobFactory. If not, > > >>and > > >> >>you > > >> >> >> >>> intend to run on YARN, is your YARN RM up and running on > > >> >>localhost? > > >> >> >> >>> > > >> >> >> >>> Cheers, > > >> >> >> >>> Chris > > >> >> >> >>> > > >> >> >> >>> On 9/2/14 12:22 PM, "Shekar Tippur" <[email protected]> > > wrote: > > >> >> >> >>> > > >> >> >> >>> >Chris .. > > >> >> >> >>> > > > >> >> >> >>> >$ cat ./deploy/samza/undefined-samza-container-name.log > > >> >> >> >>> > > > >> >> >> >>> >2014-09-02 11:17:58 JobRunner [INFO] job factory: > > >> >> >> >>> >org.apache.samza.job.yarn.YarnJobFactory > > >> >> >> >>> > > > >> >> >> >>> >2014-09-02 11:17:59 ClientHelper [INFO] trying to connect > to > > >>RM > > >> >> >> >>> >127.0.0.1:8032 > > >> >> >> >>> > > > >> >> >> >>> >2014-09-02 11:17:59 NativeCodeLoader [WARN] Unable to load > > >> >> >> >>>native-hadoop > > >> >> >> >>> >library for your platform... using builtin-java classes > where > > >> >> >> >>>applicable > > >> >> >> >>> > > > >> >> >> >>> >2014-09-02 11:17:59 RMProxy [INFO] Connecting to > > >>ResourceManager > > >> >> >>at / > > >> >> >> >>> >127.0.0.1:8032 > > >> >> >> >>> > > > >> >> >> >>> > > > >> >> >> >>> >and Log4j .. > > >> >> >> >>> > > > >> >> >> >>> ><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"> > > >> >> >> >>> > > > >> >> >> >>> ><log4j:configuration > > >> >> >>xmlns:log4j="http://jakarta.apache.org/log4j/";> > > >> >> >> >>> > > > >> >> >> >>> > <appender name="RollingAppender" > > >> >> >> >>> >class="org.apache.log4j.DailyRollingFileAppender"> > > >> >> >> >>> > > > >> >> >> >>> > <param name="File" > > >> >> >> >>> >value="${samza.log.dir}/${samza.container.name}.log" > > >> >> >> >>> >/> > > >> >> >> >>> > > > >> >> >> >>> > <param name="DatePattern" value="'.'yyyy-MM-dd" /> > > >> >> >> >>> > > > >> >> >> >>> > <layout class="org.apache.log4j.PatternLayout"> > > >> >> >> >>> > > > >> >> >> >>> > <param name="ConversionPattern" value="%d{yyyy-MM-dd > > >> >> >>HH:mm:ss} > > >> >> >> >>> %c{1} > > >> >> >> >>> >[%p] %m%n" /> > > >> >> >> >>> > > > >> >> >> >>> > </layout> > > >> >> >> >>> > > > >> >> >> >>> > </appender> > > >> >> >> >>> > > > >> >> >> >>> > <root> > > >> >> >> >>> > > > >> >> >> >>> > <priority value="info" /> > > >> >> >> >>> > > > >> >> >> >>> > <appender-ref ref="RollingAppender"/> > > >> >> >> >>> > > > >> >> >> >>> > </root> > > >> >> >> >>> > > > >> >> >> >>> ></log4j:configuration> > > >> >> >> >>> > > > >> >> >> >>> > > > >> >> >> >>> >On Tue, Sep 2, 2014 at 12:02 PM, Chris Riccomini < > > >> >> >> >>> >[email protected]> wrote: > > >> >> >> >>> > > > >> >> >> >>> >> Hey Shekar, > > >> >> >> >>> >> > > >> >> >> >>> >> Can you attach your log files? I'm wondering if it's a > > >> >> >> >>>mis-configured > > >> >> >> >>> >> log4j.xml (or missing slf4j-log4j jar), which is leading > to > > >> >> >>nearly > > >> >> >> >>> empty > > >> >> >> >>> >> log files. Also, I'm wondering if the job starts fully. > > >> >>Anything > > >> >> >>you > > >> >> >> >>> can > > >> >> >> >>> >> attach would be helpful. > > >> >> >> >>> >> > > >> >> >> >>> >> Cheers, > > >> >> >> >>> >> Chris > > >> >> >> >>> >> > > >> >> >> >>> >> On 9/2/14 11:43 AM, "Shekar Tippur" <[email protected]> > > >> wrote: > > >> >> >> >>> >> > > >> >> >> >>> >> >I am running in local mode. > > >> >> >> >>> >> > > > >> >> >> >>> >> >S > > >> >> >> >>> >> >On Sep 2, 2014 11:42 AM, "Yan Fang" < > [email protected] > > > > > >> >> >>wrote: > > >> >> >> >>> >> > > > >> >> >> >>> >> >> Hi Shekar. > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> Are you running job in local mode or yarn mode? If > yarn > > >> >>mode, > > >> >> >>the > > >> >> >> >>> log > > >> >> >> >>> >> >>is in > > >> >> >> >>> >> >> the yarn's container log. > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> Thanks, > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> Fang, Yan > > >> >> >> >>> >> >> [email protected] > > >> >> >> >>> >> >> +1 (206) 849-4108 > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> On Tue, Sep 2, 2014 at 11:36 AM, Shekar Tippur > > >> >> >> >>><[email protected]> > > >> >> >> >>> >> >>wrote: > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> > Chris, > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > Got some time to play around a bit more. > > >> >> >> >>> >> >> > I tried to edit > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > >> >> >> >>> >> > > >> >> >> >>> > > >> >> >> >>> > > >> >> >> > > >> >> > > >> > > > >>>>>>>>>>>>>samza-wikipedia/src/main/java/samza/examples/wikipedia/task/Wi > > >>>>>>>>>>>>>ki > > >> >>>>>>>>>>>pe > > >> >> >>>>>>>>>di > > >> >> >> >>>>>>>aFe > > >> >> >> >>> >>>>ed > > >> >> >> >>> >> >>StreamTask.java > > >> >> >> >>> >> >> > to add a logger info statement to tap the incoming > > >> >>message. > > >> >> >>I > > >> >> >> >>>dont > > >> >> >> >>> >>see > > >> >> >> >>> >> >> the > > >> >> >> >>> >> >> > messages being printed to the log file. > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > Is this the right place to start? > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > public class WikipediaFeedStreamTask implements > > >> >>StreamTask { > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > private static final SystemStream OUTPUT_STREAM = > > >>new > > >> >> >> >>> >> >> > SystemStream("kafka", > > >> >> >> >>> >> >> > "wikipedia-raw"); > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > private static final Logger log = > > >> >>LoggerFactory.getLogger > > >> >> >> >>> >> >> > (WikipediaFeedStreamTask.class); > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > @Override > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > public void process(IncomingMessageEnvelope > > >>envelope, > > >> >> >> >>> >> >>MessageCollector > > >> >> >> >>> >> >> > collector, TaskCoordinator coordinator) { > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > Map<String, Object> outgoingMap = > > >> >> >> >>> >> >> > WikipediaFeedEvent.toMap((WikipediaFeedEvent) > > >> >> >> >>> >>envelope.getMessage()); > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > log.info(envelope.getMessage().toString()); > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > collector.send(new > > >> >> >>OutgoingMessageEnvelope(OUTPUT_STREAM, > > >> >> >> >>> >> >> > outgoingMap)); > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > } > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > } > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > On Mon, Aug 25, 2014 at 9:01 AM, Chris Riccomini < > > >> >> >> >>> >> >> > [email protected]> wrote: > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > Hey Shekar, > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > Your thought process is on the right track. It's > > >> >>probably > > >> >> >> >>>best > > >> >> >> >>> to > > >> >> >> >>> >> >>start > > >> >> >> >>> >> >> > > with hello-samza, and modify it to get what you > > >>want. > > >> >>To > > >> >> >> >>>start > > >> >> >> >>> >>with, > > >> >> >> >>> >> >> > > you'll want to: > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > 1. Write a simple StreamTask that just does > > >>something > > >> >> >>silly > > >> >> >> >>>like > > >> >> >> >>> >> >>just > > >> >> >> >>> >> >> > > print messages that it receives. > > >> >> >> >>> >> >> > > 2. Write a configuration for the job that consumes > > >>from > > >> >> >>just > > >> >> >> >>>the > > >> >> >> >>> >> >>stream > > >> >> >> >>> >> >> > > (alerts from different sources). > > >> >> >> >>> >> >> > > 3. Run this to make sure you've got it working. > > >> >> >> >>> >> >> > > 4. Now add your table join. This can be either a > > >> >> >>change-data > > >> >> >> >>> >>capture > > >> >> >> >>> >> >> > (CDC) > > >> >> >> >>> >> >> > > stream, or via a remote DB call. > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > That should get you to a point where you've got > your > > >> >>job > > >> >> >>up > > >> >> >> >>>and > > >> >> >> >>> >> >> running. > > >> >> >> >>> >> >> > > From there, you could create your own Maven > project, > > >> >>and > > >> >> >> >>>migrate > > >> >> >> >>> >> >>your > > >> >> >> >>> >> >> > code > > >> >> >> >>> >> >> > > over accordingly. > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > Cheers, > > >> >> >> >>> >> >> > > Chris > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > On 8/24/14 1:42 AM, "Shekar Tippur" > > >><[email protected] > > >> > > > >> >> >> >>>wrote: > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > >Chris, > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >I have gone thro the documentation and decided > that > > >> >>the > > >> >> >> >>>option > > >> >> >> >>> >> >>that is > > >> >> >> >>> >> >> > > >most > > >> >> >> >>> >> >> > > >suitable for me is stream-table. > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >I see the following things: > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >1. Point samza to a table (database) > > >> >> >> >>> >> >> > > >2. Point Samza to a stream - Alert stream from > > >> >>different > > >> >> >> >>> sources > > >> >> >> >>> >> >> > > >3. Join key like a hostname > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >I have Hello Samza working. To extend that to do > > >>what > > >> >>my > > >> >> >> >>>needs > > >> >> >> >>> >> >>are, I > > >> >> >> >>> >> >> am > > >> >> >> >>> >> >> > > >not sure where to start (Needs more code change > OR > > >> >> >> >>> configuration > > >> >> >> >>> >> >> changes > > >> >> >> >>> >> >> > > >OR > > >> >> >> >>> >> >> > > >both)? > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >I have gone thro > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > >> >> >> >>> >> >> > > >> >> >> >>> >> > > >> >> >> >>> >> > > >> >> >> >>> > > >> >> >> >>> > > >> >> >> > > >> >> > > >> > > http://samza.incubator.apache.org/learn/documentation/latest/api/overvie > > >> >> >> >>>w > > >> >> >> >>> >> >> > > . > > >> >> >> >>> >> >> > > >html > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >Is my thought process on the right track? Can you > > >> >>please > > >> >> >> >>>point > > >> >> >> >>> >>me > > >> >> >> >>> >> >>to > > >> >> >> >>> >> >> the > > >> >> >> >>> >> >> > > >right direction? > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >- Shekar > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >On Thu, Aug 21, 2014 at 1:08 PM, Shekar Tippur > > >> >> >> >>> >><[email protected]> > > >> >> >> >>> >> >> > wrote: > > >> >> >> >>> >> >> > > > > > >> >> >> >>> >> >> > > >> Chris, > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > >> This is perfectly good answer. I will start > > >>poking > > >> >>more > > >> >> >> >>>into > > >> >> >> >>> >> >>option > > >> >> >> >>> >> >> > #4. > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > >> - Shekar > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > >> On Thu, Aug 21, 2014 at 1:05 PM, Chris > Riccomini > > >>< > > >> >> >> >>> >> >> > > >> [email protected]> wrote: > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > >>> Hey Shekar, > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> Your two options are really (3) or (4), then. > > >>You > > >> >>can > > >> >> >> >>>either > > >> >> >> >>> >>run > > >> >> >> >>> >> >> some > > >> >> >> >>> >> >> > > >>> external DB that holds the data set, and you > can > > >> >> >>query it > > >> >> >> >>> >>from a > > >> >> >> >>> >> >> > > >>> StreamTask, or you can use Samza's state store > > >> >> >>feature to > > >> >> >> >>> >>push > > >> >> >> >>> >> >>data > > >> >> >> >>> >> >> > > >>>into a > > >> >> >> >>> >> >> > > >>> stream that you can then store in a > partitioned > > >> >> >>key-value > > >> >> >> >>> >>store > > >> >> >> >>> >> >> along > > >> >> >> >>> >> >> > > >>>with > > >> >> >> >>> >> >> > > >>> your StreamTasks. There is some documentation > > >>here > > >> >> >>about > > >> >> >> >>>the > > >> >> >> >>> >> >>state > > >> >> >> >>> >> >> > > >>>store > > >> >> >> >>> >> >> > > >>> approach: > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > >> >> >> >>> >> > > >> >> >> >>> > > >> >> >> >>> > > >> >> >> > > >> >> > > >> > > http://samza.incubator.apache.org/learn/documentation/0.7.0/container/st > > >> >> >> >>> >> >> > > >>>ate > > >> >> >> >>> >> >> > > >>> -management.html > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>>< > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > >> >> >> >>> > > >> >> >> >>>>> > > >> >> >> > > >> >> > > http://samza.incubator.apache.org/learn/documentation/0.7.0/container/ > > >> >> >> >>>>>s > > >> >> >> >>> >> >> > > >>>tate-management.html> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> (4) is going to require more up front effort > > >>from > > >> >>you, > > >> >> >> >>>since > > >> >> >> >>> >> >>you'll > > >> >> >> >>> >> >> > > >>>have > > >> >> >> >>> >> >> > > >>> to understand how Kafka's partitioning model > > >>works, > > >> >> >>and > > >> >> >> >>> setup > > >> >> >> >>> >> >>some > > >> >> >> >>> >> >> > > >>> pipeline to push the updates for your state. > In > > >>the > > >> >> >>long > > >> >> >> >>> >>run, I > > >> >> >> >>> >> >> > believe > > >> >> >> >>> >> >> > > >>> it's the better approach, though. Local > lookups > > >>on > > >> >>a > > >> >> >> >>> >>key-value > > >> >> >> >>> >> >> store > > >> >> >> >>> >> >> > > >>> should be faster than doing remote RPC calls > to > > >>a > > >> >>DB > > >> >> >>for > > >> >> >> >>> >>every > > >> >> >> >>> >> >> > message. > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> I'm sorry I can't give you a more definitive > > >> >>answer. > > >> >> >>It's > > >> >> >> >>> >>really > > >> >> >> >>> >> >> > about > > >> >> >> >>> >> >> > > >>> trade-offs. > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> Cheers, > > >> >> >> >>> >> >> > > >>> Chris > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> On 8/21/14 12:22 PM, "Shekar Tippur" > > >> >> >><[email protected]> > > >> >> >> >>> >>wrote: > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> >Chris, > > >> >> >> >>> >> >> > > >>> > > > >> >> >> >>> >> >> > > >>> >A big thanks for a swift response. The data > > >>set is > > >> >> >>huge > > >> >> >> >>>and > > >> >> >> >>> >>the > > >> >> >> >>> >> >> > > >>>frequency > > >> >> >> >>> >> >> > > >>> >is in burst. > > >> >> >> >>> >> >> > > >>> >What do you suggest? > > >> >> >> >>> >> >> > > >>> > > > >> >> >> >>> >> >> > > >>> >- Shekar > > >> >> >> >>> >> >> > > >>> > > > >> >> >> >>> >> >> > > >>> > > > >> >> >> >>> >> >> > > >>> >On Thu, Aug 21, 2014 at 11:05 AM, Chris > > >>Riccomini > > >> >>< > > >> >> >> >>> >> >> > > >>> >[email protected]> wrote: > > >> >> >> >>> >> >> > > >>> > > > >> >> >> >>> >> >> > > >>> >> Hey Shekar, > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> This is feasible, and you are on the right > > >> >>thought > > >> >> >> >>> >>process. > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> For the sake of discussion, I'm going to > > >>pretend > > >> >> >>that > > >> >> >> >>>you > > >> >> >> >>> >> >>have a > > >> >> >> >>> >> >> > > >>>Kafka > > >> >> >> >>> >> >> > > >>> >> topic called "PageViewEvent", which has > just > > >> >>the IP > > >> >> >> >>> >>address > > >> >> >> >>> >> >>that > > >> >> >> >>> >> >> > was > > >> >> >> >>> >> >> > > >>> >>used > > >> >> >> >>> >> >> > > >>> >> to view a page. These messages will be > logged > > >> >>every > > >> >> >> >>>time > > >> >> >> >>> a > > >> >> >> >>> >> >>page > > >> >> >> >>> >> >> > view > > >> >> >> >>> >> >> > > >>> >> happens. I'm also going to pretend that you > > >>have > > >> >> >>some > > >> >> >> >>> >>state > > >> >> >> >>> >> >> called > > >> >> >> >>> >> >> > > >>> >>"IPGeo" > > >> >> >> >>> >> >> > > >>> >> (e.g. The maxmind data set). In this > example, > > >> >>we'll > > >> >> >> >>>want > > >> >> >> >>> >>to > > >> >> >> >>> >> >>join > > >> >> >> >>> >> >> > the > > >> >> >> >>> >> >> > > >>> >> long/lat geo information from IPGeo to the > > >> >> >> >>>PageViewEvent, > > >> >> >> >>> >>and > > >> >> >> >>> >> >> send > > >> >> >> >>> >> >> > > >>>it > > >> >> >> >>> >> >> > > >>> >>to a > > >> >> >> >>> >> >> > > >>> >> new topic: PageViewEventsWithGeo. > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> You have several options on how to > implement > > >> >>this > > >> >> >> >>> example. > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> 1. If your joining data set (IPGeo) is > > >> >>relatively > > >> >> >> >>>small > > >> >> >> >>> >>and > > >> >> >> >>> >> >> > changes > > >> >> >> >>> >> >> > > >>> >> infrequently, you can just pack it up in > your > > >> >>jar > > >> >> >>or > > >> >> >> >>>.tgz > > >> >> >> >>> >> >>file, > > >> >> >> >>> >> >> > and > > >> >> >> >>> >> >> > > >>> open > > >> >> >> >>> >> >> > > >>> >> it open in every StreamTask. > > >> >> >> >>> >> >> > > >>> >> 2. If your data set is small, but changes > > >> >>somewhat > > >> >> >> >>> >> >>frequently, > > >> >> >> >>> >> >> you > > >> >> >> >>> >> >> > > >>>can > > >> >> >> >>> >> >> > > >>> >> throw the data set on some HTTP/HDFS/S3 > > >>server > > >> >> >> >>>somewhere, > > >> >> >> >>> >>and > > >> >> >> >>> >> >> have > > >> >> >> >>> >> >> > > >>>your > > >> >> >> >>> >> >> > > >>> >> StreamTask refresh it periodically by > > >> >> >>re-downloading > > >> >> >> >>>it. > > >> >> >> >>> >> >> > > >>> >> 3. You can do remote RPC calls for the > IPGeo > > >> >>data > > >> >> >>on > > >> >> >> >>> every > > >> >> >> >>> >> >>page > > >> >> >> >>> >> >> > view > > >> >> >> >>> >> >> > > >>> >>event > > >> >> >> >>> >> >> > > >>> >> by query some remote service or DB (e.g. > > >> >> >>Cassandra). > > >> >> >> >>> >> >> > > >>> >> 4. You can use Samza's state feature to set > > >>your > > >> >> >>IPGeo > > >> >> >> >>> >>data > > >> >> >> >>> >> >>as a > > >> >> >> >>> >> >> > > >>>series > > >> >> >> >>> >> >> > > >>> >>of > > >> >> >> >>> >> >> > > >>> >> messages to a log-compacted Kafka topic > > >> >> >> >>> >> >> > > >>> >> ( > > >> >> >> >>> >> >> > > >> >> >>https://cwiki.apache.org/confluence/display/KAFKA/Log+Compaction > > >> >> >> >>> >> >> > ), > > >> >> >> >>> >> >> > > >>> and > > >> >> >> >>> >> >> > > >>> >> configure your Samza job to read this topic > > >>as a > > >> >> >> >>> bootstrap > > >> >> >> >>> >> >> stream > > >> >> >> >>> >> >> > > >>> >> ( > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > >> >> >> >>> >> > > >> >> >> >>> > > >> >> >> >>> > > >> >> >> > > >> >> > > >> > > http://samza.incubator.apache.org/learn/documentation/0.7.0/container/st > > >> >> >> >>> >> >> > > >>>r > > >> >> >> >>> >> >> > > >>> >>e > > >> >> >> >>> >> >> > > >>> >> ams.html). > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> For (4), you'd have to partition the IPGeo > > >>state > > >> >> >>topic > > >> >> >> >>> >> >>according > > >> >> >> >>> >> >> > to > > >> >> >> >>> >> >> > > >>>the > > >> >> >> >>> >> >> > > >>> >> same key as PageViewEvent. If PageViewEvent > > >>were > > >> >> >> >>> >>partitioned > > >> >> >> >>> >> >>by, > > >> >> >> >>> >> >> > > >>>say, > > >> >> >> >>> >> >> > > >>> >> member ID, but you want your IPGeo state > > >>topic > > >> >>to > > >> >> >>be > > >> >> >> >>> >> >>partitioned > > >> >> >> >>> >> >> > by > > >> >> >> >>> >> >> > > >>>IP > > >> >> >> >>> >> >> > > >>> >> address, then you'd have to have an > upstream > > >>job > > >> >> >>that > > >> >> >> >>> >> >> > re-partitioned > > >> >> >> >>> >> >> > > >>> >> PageViewEvent into some new topic by IP > > >>address. > > >> >> >>This > > >> >> >> >>>new > > >> >> >> >>> >> >>topic > > >> >> >> >>> >> >> > will > > >> >> >> >>> >> >> > > >>> >>have > > >> >> >> >>> >> >> > > >>> >> to have the same number of partitions as > the > > >> >>IPGeo > > >> >> >> >>>state > > >> >> >> >>> >> >>topic > > >> >> >> >>> >> >> (if > > >> >> >> >>> >> >> > > >>> IPGeo > > >> >> >> >>> >> >> > > >>> >> has 8 partitions, then the new > > >> >> >> >>>PageViewEventRepartitioned > > >> >> >> >>> >> >>topic > > >> >> >> >>> >> >> > > >>>needs 8 > > >> >> >> >>> >> >> > > >>> >>as > > >> >> >> >>> >> >> > > >>> >> well). This will cause your > > >> >> >>PageViewEventRepartitioned > > >> >> >> >>> >>topic > > >> >> >> >>> >> >>and > > >> >> >> >>> >> >> > > >>>your > > >> >> >> >>> >> >> > > >>> >> IPGeo state topic to be aligned such that > the > > >> >> >> >>>StreamTask > > >> >> >> >>> >>that > > >> >> >> >>> >> >> gets > > >> >> >> >>> >> >> > > >>>page > > >> >> >> >>> >> >> > > >>> >> views for IP address X will also have the > > >>IPGeo > > >> >> >> >>> >>information > > >> >> >> >>> >> >>for > > >> >> >> >>> >> >> IP > > >> >> >> >>> >> >> > > >>> >>address > > >> >> >> >>> >> >> > > >>> >> X. > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> Which strategy you pick is really up to > you. > > >>:) > > >> >> >>(4) is > > >> >> >> >>> the > > >> >> >> >>> >> >>most > > >> >> >> >>> >> >> > > >>> >> complicated, but also the most flexible, > and > > >> >>most > > >> >> >> >>> >> >>operationally > > >> >> >> >>> >> >> > > >>>sound. > > >> >> >> >>> >> >> > > >>> >>(1) > > >> >> >> >>> >> >> > > >>> >> is the easiest if it fits your needs. > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> Cheers, > > >> >> >> >>> >> >> > > >>> >> Chris > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> On 8/21/14 10:15 AM, "Shekar Tippur" > > >> >> >> >>><[email protected]> > > >> >> >> >>> >> >>wrote: > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> >Hello, > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >I am new to Samza. I have just installed > > >>Hello > > >> >> >>Samza > > >> >> >> >>>and > > >> >> >> >>> >> >>got it > > >> >> >> >>> >> >> > > >>> >>working. > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >Here is the use case for which I am trying > > >>to > > >> >>use > > >> >> >> >>>Samza: > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >1. Cache the contextual information which > > >> >>contains > > >> >> >> >>>more > > >> >> >> >>> >> >> > information > > >> >> >> >>> >> >> > > >>> >>about > > >> >> >> >>> >> >> > > >>> >> >the hostname or IP address using > > >> >>Samza/Yarn/Kafka > > >> >> >> >>> >> >> > > >>> >> >2. Collect alert and metric events which > > >> >>contain > > >> >> >> >>>either > > >> >> >> >>> >> >> hostname > > >> >> >> >>> >> >> > > >>>or IP > > >> >> >> >>> >> >> > > >>> >> >address > > >> >> >> >>> >> >> > > >>> >> >3. Append contextual information to the > > >>alert > > >> >>and > > >> >> >> >>>metric > > >> >> >> >>> >>and > > >> >> >> >>> >> >> > > >>>insert to > > >> >> >> >>> >> >> > > >>> >>a > > >> >> >> >>> >> >> > > >>> >> >Kafka queue from which other subscribers > > >>read > > >> >>off > > >> >> >>of. > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >Can you please shed some light on > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >1. Is this feasible? > > >> >> >> >>> >> >> > > >>> >> >2. Am I on the right thought process > > >> >> >> >>> >> >> > > >>> >> >3. How do I start > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >I now have 1 & 2 of them working > > >>disparately. I > > >> >> >>need > > >> >> >> >>>to > > >> >> >> >>> >> >> integrate > > >> >> >> >>> >> >> > > >>> them. > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >Appreciate any input. > > >> >> >> >>> >> >> > > >>> >> > > > >> >> >> >>> >> >> > > >>> >> >- Shekar > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> >> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >>> > > >> >> >> >>> >> >> > > >> > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > > > >> >> >> >>> >> >> > > > >> >> >> >>> >> >> > > >> >> >> >>> >> > > >> >> >> >>> >> > > >> >> >> >>> > > >> >> >> >>> > > >> >> >> >> > > >> >> >> > > >> >> >> > > >> >> > > >> >> > > >> > > >> > > > > >
