DataflowTemplates | provided Cloud Dataflow template pipelines | GCP library
kandi X-RAY | DataflowTemplates Summary
kandi X-RAY | DataflowTemplates Summary
Google-provided Cloud Dataflow template pipelines for solving simple in-Cloud data tasks
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Top functions reviewed by kandi - BETA
- This method is used to expand the export conditions
- Parses a single row .
- Runs the pipeline .
- Convert Kafka schema to a Kafka schema
- Converts the given schema to a DDL table .
- Gets the credentials from the secret store .
- Build table schema .
- Advances to the next record .
- Updates a batch of source records .
- Convert the DDL to a collection .
DataflowTemplates Key Features
DataflowTemplates Examples and Code Snippets
Community Discussions
Trending Discussions on DataflowTemplates
QUESTION
I am following this tutorial on migrating data from an oracle database to a Cloud SQL PostreSQL instance.
I am using the Google Provided Streaming Template Datastream to PostgreSQL
At a high level this is what is expected:
- Datastream exports in Avro format backfill and changed data into the specified Cloud Bucket location from the source Oracle database
- This triggers the Dataflow job to pickup the Avro files from this cloud storage location and insert into PostgreSQL instance.
When the Avro files are uploaded into the Cloud Storage location, the job is indeed triggered but when I check the target PostgreSQL database the required data has not been populated.
When I check the job logs and worker logs, there are no error logs. When the job is triggered these are the logs that logged:
...ANSWER
Answered 2022-Jan-26 at 19:14This answer is accurate as of 19th January 2022.
Upon manual debug of this dataflow, I found that the issue is due to the dataflow job is looking for a schema with the exact same name as the value passed for the parameter databaseName
and there was no other input parameter for the job using which we could pass a schema name. Therefore for this job to work, the tables will have to be created/imported into a schema with the same name as the database.
However, as @Iñigo González said this dataflow is currently in Beta and seems to have some bugs as I ran into another issue as soon as this was resolved which required me having to change the source code of the dataflow template job itself and build a custom docker image for it.
QUESTION
I'm building a provided Google Dataflow template here. So I'm running the command:
...ANSWER
Answered 2021-Oct-01 at 08:16Starting from Maven 3.8.1, http repositories are blocked.
You need to either configure them as mirrors in your settings.xml
or replace them by https repositories (if those exist).
QUESTION
I'm trying to remove Datastore Bulk with Dataflow and to use JS UDF to filter entities regarding doc. But this code:
...ANSWER
Answered 2021-Aug-09 at 18:59Assuming that modifiedAt is a property you added, I would expect the JSON in Dataflow to match the Datastore rest api (https://cloud.google.com/datastore/docs/reference/data/rest/v1/Entity). Which would mean you probably want row.properties.modifiedAt
. You also probably want to pull out the timestampValue
of the property (https://cloud.google.com/datastore/docs/reference/data/rest/v1/projects/runQuery#Value).
QUESTION
Is there any Python template/script (existing or roadmap) for Dataflow/Beam to read from PubSub and write to BigQuery? As per the GCP documentation, there is only a Java template.
Thanks !
...ANSWER
Answered 2021-Feb-21 at 13:57You can find an example here Pub/Sub to BigQuery sample with template:
An Apache Beam streaming pipeline example.
It reads JSON encoded messages from Pub/Sub, transforms the message data, and writes the results to BigQuery.
Here's another example that shows how to handle invalid message from pubsub into a different table in Bigquery :
QUESTION
I have an IoT Pipeline in GCP that is structured like:
...ANSWER
Answered 2021-Jan-24 at 21:53This error was being caused because after every 10 seconds the pub/sub resent the messages that had not yet been acknowledged. This caused the total number of messages to grow rapidly as the number of devices sending the messages and the rate at which they sent them was already very high. So I increased this wait time to 30 seconds and the system calmed down. Now there is no large group of unacknowledged messages forming when I run the pipeline.
QUESTION
My pipeline is IoTCore -> Pub/Sub -> Dataflow -> BigQuery. Initially the data I was getting was Json format and the pipeline was working properly. Now I need to shift to csv and the issue is the Google defined dataflow template I was using uses Json input instead of csv. Is there an easy way of transfering csv data from pub/sub to bigquery through dataflow. The template can probably be changed but it is implemented in Java which I have never used so would take a long time to implement. I also considered implementing an entire custom template in python but that would take too long. Here is a link to the template provided by google: https://github.com/GoogleCloudPlatform/DataflowTemplates/blob/master/src/main/java/com/google/cloud/teleport/templates/PubSubToBigQuery.java
Sample: Currently my pub/sub messages are JSON and these work correctly
...ANSWER
Answered 2021-Jan-02 at 19:48Very easy: Do nothing!! If you have a look to this line you can see that the type of the messages used is the PubSub message JSON, not your content in JSON.
So, to prevent any issues (to query and to insert), write in another table and it should work nicely!
QUESTION
Can Google Dataflow CDC be used to copy the mysql DB tables for the very first time too or is it only used for change data going forward? https://github.com/GoogleCloudPlatform/DataflowTemplates/tree/master/v2/cdc-parent#deploying-the-connector
...ANSWER
Answered 2020-Oct-07 at 17:50The CDC solution you linked to includes the initial copy as part of its normal operation. When you first start it up, it will copy the current contents of the DB first, then continue to copy any updates.
QUESTION
unable to install apache maven packages in gcp console please let me know if any one resolves the issue. I'm trying to create dataflow pipeline following the below link enter link description here
...ANSWER
Answered 2020-Sep-02 at 08:14By now this is well known to developers bug, confirmed on my side, getting the same kafka-to-bigquery
template compilation error around DataStreamClient
class. Seems the new PR for CacheUtils.java
is going to appear soon, more info here.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install DataflowTemplates
You can use DataflowTemplates 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 DataflowTemplates 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 .
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