spark-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Mich Talebzadeh <mich.talebza...@gmail.com>
Subject Re: Flume integration
Date Mon, 21 Nov 2016 10:37:08 GMT
Hi Ian,

Flume is great for ingesting data into HDFS and Hbase. However, that is
part of batch layer.

For real time processing, I would go through Kafka into spark streaming.
Except your case, I have not established if anyone else does Flume directly
into Spark?

If so how mature is it.

Thanks

Dr Mich Talebzadeh



LinkedIn * https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
<https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>*



http://talebzadehmich.wordpress.com


*Disclaimer:* Use it at your own risk. Any and all responsibility for any
loss, damage or destruction of data or any other property which may arise
from relying on this email's technical content is explicitly disclaimed.
The author will in no case be liable for any monetary damages arising from
such loss, damage or destruction.



On 21 November 2016 at 10:27, Ian Brooks <i.brooks@sensewhere.com> wrote:

>
> We use Flume already as our way of getting data from our application in to
> HDFS and HBase, we have some new work we are looking at that requires
> realtime processing on data that we don't need to store, so It fits into
> our existing platform easier just to pass the data through Flume like
> everything else and just route this data to SPARK.
>
> -Ian
>
>
>
>
> On Monday 21 November 2016 07:59:42 ayan guha wrote:
>
> Hi
>
> While I am following this discussion with interest, I am trying to
> comprehend any architectural benefit of a spark sink.
>
> Is there any feature in flume makes it more suitable to ingest stream data
> than sppark streaming, so that we should chain them? For example does it
> help durability or reliability of the source?
>
> Or, it is a more tactical choice based on connector availability or such?
>
> To me, flume is important component to ingest streams to hdfs or hive
> directly ie it plays on the batch side of lambda architecture pattern.
>
> On 20 Nov 2016 22:30, "Mich Talebzadeh" <mich.talebzadeh@gmail.com> wrote:
>
> Hi Ian,
>
>
> Has this been resolved?
>
>
> How about data to Flume and then Kafka and Kafka streaming into Spark?
>
>
> Thanks
>
>
> Dr Mich Talebzadeh
>
>
>
> LinkedIn  https://www.linkedin.com/profile/view?id=
> AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw
>
>
>
> http://talebzadehmich.wordpress.com
>
>
> Disclaimer: Use it at your own risk. Any and all responsibility for any
> loss, damage or destruction of data or any other property which may arise
> from relying on this email's technical content is explicitly disclaimed.
> The author will in no case be liable for any monetary damages arising from
> such loss, damage or destruction.
>
>
>
>
> On 13 July 2016 at 11:13, Ian Brooks <i.brooks@sensewhere.com> wrote:
>
> Hi,
>
>
>
> I'm currently trying to implement a prototype Spark application that gets
> data from Flume and processes it. I'm using the pull based method mentioned
> in https://spark.apache.org/docs/1.6.1/streaming-flume-integration.html
>
>
>
> The is initially working fine for getting data from Flume, however the
> Spark client doesn't appear to be letting Flume know that the data has been
> received, so Flume doesn't remove it from the batch.
>
>
>
> After 100 requests Flume stops allowing any new data and logs
>
>
>
> 08 Jul 2016 14:59:00,265 WARN  [Spark Sink Processor Thread - 5]
> (org.apache.spark.streaming.flume.sink.Logging$class.logWarning:80)  -
> Error while processing transaction.
> org.apache.flume.ChannelException: Take list for MemoryTransaction,
> capacity 100 full, consider committing more frequently, increasing
> capacity, or increasing thread count
>        at org.apache.flume.channel.MemoryChannel$MemoryTransaction.doTake(
> MemoryChannel.java:96)
>
>
>
> My code to pull the data from Flume is
>
>
>
> SparkConf sparkConf = new SparkConf(true).setAppName("SLAMSpark");
>
> Duration batchInterval = new Duration(10000);
>
> final String checkpointDir = "/tmp/";
>
>
>
> final JavaStreamingContext ssc = new JavaStreamingContext(sparkConf,
> batchInterval);
>
> ssc.checkpoint(checkpointDir);
>
> JavaReceiverInputDStream<SparkFlumeEvent> flumeStream = FlumeUtils.createPollingStream(ssc,
> host, port);
>
>
>
> // Transform each flume avro event to a process-able format
>
> JavaDStream<String> transformedEvents = flumeStream.map(new
> Function<SparkFlumeEvent, String>() {
>
>
>
> @Override
>
> public String call(SparkFlumeEvent flumeEvent) throws Exception {
>
> String flumeEventStr = flumeEvent.event().toString();
>
> avroData avroData = new avroData();
>
> Gson gson = new GsonBuilder().create();
>
> avroData = gson.fromJson(flumeEventStr, avroData.class);
>
> HashMap<String,String> body = avroData.getBody();
>
> String data = body.get("bytes");
>
> return data;
>
> }
>
> });
>
>
>
> ...
>
>
>
> ssc.start();
>
> ssc.awaitTermination();
>
> ssc.close();
>
> }
>
>
>
> Is there something specific I should be doing to let the Flume server know
> the batch has been received and processed?
>
>
> --
>
> Ian Brooks
>
>
>
>
>
>
>
> --
>
> Ian Brooks
>
> Lead Cloud Systems Engineer
>
>
>
> Mobile: +44 7900987187
>
> UK Office: +44 131 629 5155
>
> US Office: +1 650 943 2403
>
> Skype: ijbrooks
>
>
>
> E-mail: i.brooks@sensewhere.com
>
> Web: www.sensewhere.com
>
>
>
> sensewhere Ltd. 4th Floor, 108 Princes Street, Edinburgh EH2 3AA.
>
> Company Number: SC357036
>
> sensewhere USA 800 West El Camino Real, Suite 180, Mountain View,
> California, 94040
>
> sensewhere China Room748, 7/F, Tower A, SCC, No.88 Haide 1st Avenue,
> Nanshan District, Shenzhen 51806
>
>
>
>

Mime
View raw message