amazon-kinesis

Difference between Kinesis Stream and DynamoDB streams

点点圈 提交于 2019-12-03 20:39:02
问题 They seem to be doing the same thing to me. Can anyone explain to me the difference? 回答1: High level difference between the two: Kinesis Streams allows you to produce and consume large volumes of data(logs, web data, etc), where DynamoDB Streams is a feature local to DynamoDB that allows you to see the granular changes to your DynamoDB table items. More details: Amazon Kinesis Streams Amazon Kinesis Streams is part of Big Data suite of services at AWS. From the developer documentation: You

Reliability issues with Checkpointing/WAL in Spark Streaming 1.6.0

不问归期 提交于 2019-12-03 16:22:00
问题 Description We have a Spark Streaming 1.5.2 application in Scala that reads JSON events from a Kinesis Stream, does some transformations/aggregations and writes the results to different S3 prefixes. The current batch interval is 60 seconds. We have 3000-7000 events/sec. We’re using checkpointing to protect us from losing aggregations. It’s been working well for a while, recovering from exceptions and even cluster restarts. We recently recompiled the code for Spark Streaming 1.6.0, only

Expected behavior for AWS Kinesis ShardIteratorType TRIM_HORIZON

别等时光非礼了梦想. 提交于 2019-12-03 12:11:38
Context : I'm not necessarily referring to a KCL-based application, just pure Kinesis API calls. Does the using the TRIM_HORIZON shard iterator type immediately give you the earliest published record in the stream (ie earliest available within Kinesis' built-in 24hr window), or simply an iterator/cursor for some time period as much as 24 hours ago, that you must then use to advance along the stream until you hit the earliest published record? Put another way, in case that's not quite clear.... When using the shard iterator type of TRIM_HORIZON , is the expected behavior that it will begin with

Boto3 Kinesis Video GetMedia and OpenCV

你说的曾经没有我的故事 提交于 2019-12-03 10:49:50
问题 I'm trying to use Boto3 to get a video stream from kinesis and then use OpenCV to display the feed and save it to a file at the same time. The process of getting the signed URL and then the Getmedia request seems to work perfectly it's just when I'm trying to render it using OpenCV it doesn't seem to work. Data is defiantly going to the stream import boto3 import numpy as np import cv2 kinesis_client = boto3.client('kinesisvideo', region_name='eu-west-1', aws_access_key_id='ACC', aws_secret

Amazon Kinesis and guaranteed ordering

∥☆過路亽.° 提交于 2019-12-03 00:37:08
Amazon claims their Kinesis streaming product guarantees record ordering. It provides ordering of records, as well as the ability to read and/or replay records in the same order (...) Kinesis is composed of Streams that are themselves composed of one or more Shards. Records are stored in these Shards. We can write consumer applications that connect to a Shard and read/replay records in the order they were stored. But can Kinesis guarantee, out of the box, ordering for the Stream itself without pushing ordering logic to the consumers? How can a consumer read records from multiple Shards of the

Spring Aws Kinesis Binder ProvisionedThroughputExceededException while consuming messages in Batch Mode

让人想犯罪 __ 提交于 2019-12-02 20:21:23
问题 I am using the batch mode to pull in the records from kinesis stream. We are using spring aws kinesis binder. Most of the times we are not able to pull messages from stream. Only some times we are able to pull messages from stream. My config looks like below My config spring: cloud: stream: kinesis: binder: locks: leaseDuration: 30 readCapacity: 1 writeCapacity: 1 checkpoint: readCapacity: 1 writeCapacity: 1 bindings: InStreamGroupOne: consumer: listenerMode: batch idleBetweenPolls: 30000

How to perform face recognition on a streaming video using amazon Rekognition?

别等时光非礼了梦想. 提交于 2019-12-02 14:21:45
问题 I am streaming video the amazon kinesis from raspberry pi (This is done). Now i want to perform face detection/recognition on that video using amazon Rekognition how to do it explain in detail with links. Thanks 回答1: From Working with Streaming Videos - Amazon Rekognition: You can use Amazon Rekognition Video to detect and recognize faces in streaming video. A typical use case is when you want to detect a known face in a video stream. Amazon Rekognition Video uses Amazon Kinesis Video Streams

Spring Aws Kinesis Binder ProvisionedThroughputExceededException while consuming messages in Batch Mode

﹥>﹥吖頭↗ 提交于 2019-12-02 08:00:18
I am using the batch mode to pull in the records from kinesis stream. We are using spring aws kinesis binder. Most of the times we are not able to pull messages from stream. Only some times we are able to pull messages from stream. My config looks like below My config spring: cloud: stream: kinesis: binder: locks: leaseDuration: 30 readCapacity: 1 writeCapacity: 1 checkpoint: readCapacity: 1 writeCapacity: 1 bindings: InStreamGroupOne: consumer: listenerMode: batch idleBetweenPolls: 30000 recordsLimit: 5000 consumer-backoff: 1000 bindings: InStreamGroupOne: group: in-stream-group destination:

How to perform face recognition on a streaming video using amazon Rekognition?

霸气de小男生 提交于 2019-12-02 07:56:21
I am streaming video the amazon kinesis from raspberry pi (This is done). Now i want to perform face detection/recognition on that video using amazon Rekognition how to do it explain in detail with links. Thanks From Working with Streaming Videos - Amazon Rekognition : You can use Amazon Rekognition Video to detect and recognize faces in streaming video. A typical use case is when you want to detect a known face in a video stream. Amazon Rekognition Video uses Amazon Kinesis Video Streams to receive and process a video stream. The analysis results are output from Amazon Rekognition Video to a

What is the streaming log data latency between AWS & Google cloud services?

隐身守侯 提交于 2019-12-02 02:17:56
问题 Has anyone had experience with: Sending streamed/micro-batched log data from Amazon to BigQuery to process and can shed light on any latency issue? Sending (micro-batched) logs from Google DataFlow to Amazon (Kinesis / S3 / DynamoDB) Can someone provide info on latency? Thanks 回答1: In question 1, I believe you're interested in BigQuery ingestion latency. Per Streaming Data into BigQuery, Streamed data is available for real-time analysis within a few seconds of the first streaming insertion