redisio | Development repository for the redisio cookbook | Infrastructure Automation library
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kandi X-RAY | redisio Summary
Installs and configures Redis server instances.
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QUESTION
I have an existing Apache Beam project with Java 8, Apache Beam 2.27.0, Maven and Dagger 2.
I migrated this project in Kotlin : Kotlin JDK 8 with version 1.5.0.
I used the 1.5.0 version of Kotlin because the 1.4.3 had an issue with Beam and Maven plugin (Could not read class: VirtualFile : Kotlin 1.4.30 Apache beam compilation error)
Everything seems to be good except the use of native MapElement or FlatMapElement with Typedescriptor and lambda expression.
A part of my pom.xml file
...ANSWER
Answered 2021-May-02 at 00:54When i replace the lambda by a class that implements the SerializableFunction function, this works
QUESTION
I am working on a task to clear the cache of memorystore if the input file to be processed by dataflow has data. This means, if the input file has no records, the memorystore won't be flushed, but the input file has even one record, the memorystore should be flushed and then the input file should be processed.
My dataflow application is a multi-pipeline application which reads, processes and then stores the data in the memorystore. The pipeline is executing successfully. However, the flushing of the memorystore is working but after flushing, the insertion is not happening.
I have written a function that flushes the memorystore after checking if the input file has a record.
FlushingMemorystore.java
...ANSWER
Answered 2020-Nov-04 at 23:19I suspect the problem here is that you need to ensure the "Flush" step runs (and completes) before the RedisIO.write step happens. Beam has a Wait.on transform that you can use for this.
To accomplish this, we can use the output from the flushing PTransform as a signal that we've flushed the database - and we only write to the database after we are done flushing. The process
call for your flushing DoFn would look like this:
QUESTION
I am trying to count the number of rows in an input file and I am using Cloud dataflow Runner for creating the template. In the below code, I am reading the file from a GCS bucket, processing it and then storing the output in a Redis instance.
But I am unable to count the number of lines of the input file.
Main Class
...ANSWER
Answered 2020-Sep-18 at 19:23Proper way to do this is to write the count to a storage system using a Beam connector (or using a Beam ParDo). Pipeline result is not directly available to the main program since Beam runner could parallelize computation and execution may not happen in the same computer.
For example (pseudocode):
QUESTION
Im experimenting abit with Socket.io and Socket.Io-redis. I have my Redis server up and running. The error i get when starting the Socket.Io server is: ReplyError: ERR unknown command 'pubsub' I dont know why i get this error at all.
The Redis version i'm using is 2.4.5
...ANSWER
Answered 2020-Mar-06 at 19:24I fixed it by installing latest version of Redis! :)
QUESTION
I am starting out with Apache Beam, and I would like to read from a hash that I have stored in Redis, and I will also need to select the database (number). I looked at the source of RedisIO, but it does not seem like it includes the ability to do either of these things. Have I missed something, or am I going to have to write my own implementation to achieve this?
...ANSWER
Answered 2019-Aug-26 at 20:53Unfortunately, these parameters are not currently supported.
For now, the easiest way to do this would be to extend RedisIO.BaseReadFn
and overwrite setup
and teardown
.
QUESTION
I see there is a RedisIO source and sink since Apache Beam 2.2.0, but it seems it is impossible to just use it.
Looking at the code, I see it is marked as experimental.
How can I still use it, even when such ?
Please advise,
Shushu
ANSWER
Answered 2018-May-02 at 06:56Found I was missing a dependency... https://mvnrepository.com/artifact/org.apache.beam/beam-sdks-java-io-redis/2.4.0
QUESTION
I want to initially execute app:rake db:setup
from GitLab so the db could be initialized.
Snippet from my GitLab YAML (init-db.yaml)
...ANSWER
Answered 2017-Oct-20 at 17:08UPDATE: This is not the right answer. Please refer to Andy Shinn's answer.
Each command should be an item inside the command array. As you want to execute two commands, try this:
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