samza | Mirror of Apache Samza | Pub Sub library

by apache Java Version: release-1.8.0-rc0 License: Apache-2.0

X-Ray Key Features Code Snippets(1)Community Discussions(2)Vulnerabilities Install Support

kandi X-RAY | samza Summary

samza is a Java library typically used in Messaging, Pub Sub, Kafka applications. samza has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has medium support. You can download it from GitHub.

Apache Samza is a distributed stream processing framework. It uses Apache Kafka for messaging, and Apache Hadoop YARN to provide fault tolerance, processor isolation, security, and resource management.

Support

Quality

Security

License

Reuse

Support

samza has a medium active ecosystem.

It has 770 star(s) with 315 fork(s). There are 61 watchers for this library.

It had no major release in the last 6 months.

samza has no issues reported. There are 38 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of samza is release-1.8.0-rc0

Quality

samza has 0 bugs and 0 code smells.

Security

samza has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

samza code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

samza is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

samza releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

samza saves you 133714 person hours of effort in developing the same functionality from scratch.

It has 152866 lines of code, 11541 functions and 1803 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed samza and discovered the below as its top functions. This is intended to give you an instant insight into samza implemented functionality, and help decide if they suit your requirements.

Returns the store actions .
Performs the optimizations on a join .
Formats the schema for display .
Start side input storage .
Validates join query .
Group a set of stores .
Creates and returns a listener which allows to observe when the job model has expired .
Opens the JNI console and prints the result .
returns topological sort of nodes
Validates output record .

Get all kandi verified functions for this library.

samza Key Features

No Key Features are available at this moment for samza.

samza Examples and Code Snippets

default

pypi

Lines of Code : 39

License : No License

Copy

Python Stream Processing
# Python Streams
# Forever scalable event processing & in-memory durable K/V store;
# as a library w/ asyncio & static typing.
import faust
app = faust.App('myapp', broker='kafka://localhost')
# Models describe how me

Community Discussions

Trending Discussions on samza

How to implement a WindowableTask similar to samza in apache flink?

Apache Samza flush table update to changelog immediately

QUESTION

How to implement a WindowableTask similar to samza in apache flink?

Asked 2020-Dec-23 at 15:49

Samza has a concept of windowing where a stream processing job needs to do something in regular intervals, regardless of how many incoming messages the job is processing.

For example, a simple per-minute event counter in samza will be like below:

...

ANSWER

Answered 2020-Dec-23 at 15:49

There are at least four different ways to interpret "per-minute". Along one binary dimension there's the distinction between using event time and processing time (one minute as measured by timestamps in the events, or one minute as measured by the CPU wall clock). And the other binary dimension has to do with whether the minutes are aligned to UTC, or to the first event.

The relevant lower-level mechanisms available to you in Flink are event time and processing time windows, and timers, which are part of process functions. For self-paced tutorials, examples, and exercises with solutions, see Learn Flink: Hands-on Training.

But with Flink, windowing is more readily done with SQL or the Table API. For example, a simple per-processing-time-minute event counter will be like this:

Source https://stackoverflow.com/questions/65414125

QUESTION

Apache Samza flush table update to changelog immediately

Asked 2020-Dec-17 at 08:23

If I specify a changelog backing for a RocksDB Table in Samza. Is there configuration to update the async write time to the changelog? I want to reduce it to a shorter time. I cannot see anything in the Config reference.

The scenario I want is too write to a changelog from a stream after bridging a legacy JMS connection. This legacy connection provides partial updates and I want to merge the partial updates into a fuller message building a cache of these messages in the samza streaming application and write these down to a changelog.

If I use a changelog configured with stores.store-name.changelog then it will write to the changelog eventually changes I make to the Samze API Table. But not quick enough for my needs so want to configure the max wait time to propagate to changelog.

Alternatively it seems that using the withSideInputs to bootstrap my table each time and then using sendTo will work faster to update and I can keep a LocalStore to read and write the cache too and always have the changelog as golden source.

The reason I want the changelog to write quickly too is because other applications are reading from this changelog.

...

ANSWER

Answered 2020-Dec-17 at 08:23

Yes you can configure the time it will commit changes to the changelog usin the config:

Source https://stackoverflow.com/questions/65276682

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install samza

You can download it from GitHub.
You can use samza like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the samza component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .