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Questions tagged [hazelcast-jet]

Hazelcast Jet is a distributed computing platform for low-latency stream and batch processing. It benefits from integration with Hazelcast IMDG providing fast, scalable Big Data processing that’s lightweight and embeddable.

Hazelcast Jet is a distributed computing platform for low-latency stream and batch processing. It benefits from integration with Hazelcast IMDG providing fast, scalable Big Data processing that’s lightweight and embeddable.

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Problem trying to configure an interface and connect to the cluster

Hello people and good day, i'm trying to build an interface so, the interface it will be an external client that i need to get access from my linux console and execute the commands, this is the interface public class HazelcastCacheImpl implements…
killopolo
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Can we read parquet file in Hazelcast jet?

I trying to read parquet file via Hazelcast for that I have written below code which is working fine, but do Hazelcast provide any in-build source to read parquet file? BatchSource csvData = SourceBuilder .batch("parquet-source", x…
user3458271
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Aggregation and grouping using Hazelcast jet

I am trying to do grouping and aggregation using Hazelcast Jet but it is getting little bit slow as I have to loop through data twice one for creating groupingKey and after that aggregating all data so is there any better and feasible way to it,…
user3458271
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Hazelcast Jet not allowing Tomcat to stop

I am using Hazelcast jet to some aggregation and grouping but after being idle for sometime and when I tried to stop my tomcat it is not allowing to stop my tomcat and I have restart my PC. Below is the error which I am getting. Please anyone can…
user3458271
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Hazelcast getSql().execute() throws Unrecognized client message received with type: 0x210100

I am trying out Hazelcast client-server. So far, I Got up hazelcast server members Create a spring boot application and connected to hazelcast Inserted/updated/queried Imap in hazelcast instance Used SQL Predicate to query map objects Now I am…
Maram Sreerama Reddy
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Hazelcast Jet logs not working after configuration

I am new to Hazelcast and I am trying to change the logs location to file using logs4j but it seems to be not working. log file is getting created but there is no entry coming, please help how can I make it working. JetConfig jetConfig = new…
user3458271
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Are Hazelcast Jet Reliable Topic Sinks idempotent? (Hazelcast fault-tolerance of a websocket source)

I cannot find this in the Hazelcast Jet 5.0 (or 4.x) documentation, so I hope someone can answer this here - can a reliable topic be used as an idempotent sink, for example to de-duplicate events coming from two identical unreliable sources (like a…
siddhadev
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Hazelcast multiple left joins not working for two it is working fine

I am new to Hazelcast Jet and I m tryin to join 4 datas but join is not working as accepted I am not sure what wrong I am doing as for two tables it is working fine. Please help My Code: BatchStageWithKey jdbcGroupByKey =…
user3458271
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Problem with data structures using Hazelcast and Hazelcast Jet

I'm having a few problems with jet and hazelcast, but my question is for logic purposes, I have a class which is going to bring all the data and when we start the client we got a queue and 2 maps, but the other map is not called yet, when I start…
killopolo
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In Hazelcast jet how can we store IList to normal list as I have to sent it in Response?

I am new to Hazelcast jet and in my application on data I am doing some aggregation and getting data but I want to send that in rest response so how can I change it to normal list? public class ResponseMessage { private T…
user3458271
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In Hazelcast jet how to Sink Map object to BatchSource?

I am new to Hazelcast jet and I am not getting how to Sink simple java.util.Map to BatchSource? I have tried below but not seems to be working. Map data =new HashMap(); data.put("xyz", "abc"); Way 1: Map
user3458271
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Can't set hazelcast ManagedContext when using Jet.bootstrappedInstance()

I want to run hazelcast-jet embedded in my spring application (ie cluster is in process / NOT remote). I also want my jet jobs to be able to access spring beans from the ApplicationContext (see jet/spring docs). I don't want to have to configure the…
lance-java
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Hazelcast Node multiple errors when run multiple nodes

i'm trying to launch several nodes with this programmatic configuration public class Server { private Server() { //TODO: MapStore/MapLoader config here MapConfig accountMapConfig = new…
killopolo
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Submit mutiple jobs in hazelcast jet

I have two separate jet pipeline. and I have to execute one by one. public static void main(String[] args) { JetInstance instance = Jet.newJetInstance(); // this job is for stream processing JobConfig cfg1 = new…
h387518
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StreamSource vs BatchStage in hazelcast jet

I'm using CDC in my application. CDC always returns the object in the form of streams.StreamSource source. My Requirement:- 1] Capture the db changes using cdc and store in the map.. 2] in the next steps I will be doing batch process…
vivek
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