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kandi X-RAY | Cachet Summary
kandi X-RAY | Cachet Summary
Cachet is a beautiful and powerful open source status page system.
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Top functions reviewed by kandi - BETA
- Show incidents .
- Post settings .
- Configure the drivers .
- Seed the components .
- Get the index action .
- Send the beacon .
- Get the system status .
- List last hour
- Handle the login form .
- Edit an incident .
Cachet Key Features
Cachet Examples and Code Snippets
Community Discussions
Trending Discussions on Cachet
QUESTION
I need to understand if there is any difference between the below two approaches of caching while using spark sql and is there any performance benefit of one over the another (considering building the dataframes are costly and I want to reuse it many times/hit many actions) ?
1> Cache the original data frame before registering it as temporary table
df.cache()
df.createOrReplaceTempView("dummy_table")
2> Register the dataframe as temporary table and cache the table
df.createOrReplaceTempView("dummy_table")
sqlContext.cacheTable("dummy_table")
Thanks in advance.
...ANSWER
Answered 2020-Oct-14 at 15:01df.cache()
is a lazy cache, which means that the cache would only occur when the next action is triggered.
sqlContext.cacheTable("dummy_table")
is an eager cache, which mean the table will get cached as the command is called. An equivalent of this would be: spark.sql("CACHE TABLE dummy_table")
To answer your question if there is a performance benefit of one over another, it will be hard to tell without understand your entire workflow and how (and where) your cached dataframes are used. I'd recommend using the eager cache, so you won't have to second guess when (and whether) your dataframe is cached.
QUESTION
In our software we have something like a cache inside a table of a database hosted on a Microsoft SQL-Server (2008 R2 to 2019). Now I have to debug some lines of code which only run, when this cache is empty. Otherwise the data comes from the cache and the code I need to debug doesn't run.
Since I'm sick of always manually deleting the content of this cache table before I can debug again, I'm looking for a way to make this cache table read-only for a while.
I can't change the code which is actually writing data to this cache table, so I'm looking for a way to achieve my goal with only using the SQL Management Studio, preferably running a TSQL script to switch on the read-only-ability and another script to switch it off again.
Googling for that I found several ways to accomplish that, but unfortunately all the ways I googled raise an error, which prevents our software to run along.
My preferred solution would be a trigger on my cache table, something like this:
...ANSWER
Answered 2020-Sep-22 at 11:14Nevermind, I think I found a solution. Removing the ROLLBACK TRANSACTION
and putting a non-sense line of code between BEGIN
and END
did the trick.
QUESTION
There are a lot of similar questions here, but none answers the problem.
When using image_picker, barcode_scanner or other plugins which open their own activities everything works well until I use either the "cancel" button or the "back"-Button. My app crashes as soon as I hit the cancel-button with the following error log: (I used image_cropper to show this error, but image_picker and barcode_scanner create similar errors)
...ANSWER
Answered 2020-Jun-30 at 10:54I've found the error myself, it was actually in another repository I used: The health Plugin can't handle these "null"-results: https://pub.dev/packages/health. I didn't think another plugin can cause such results.
Relevant issue in the health package: https://github.com/cph-cachet/flutter-plugins/issues/88
Since other Activities cause onAcitivityResult to run, the health plugin causes the crash
QUESTION
My map is functioning properly until I search for a nearest store location via zip code and try to click on a result's title in the generated panel to show the infoWindow of that corresponding title.
In other words, I want to be able to click the search result titles and when you do, it opens the infoWindow on the map marker associated with the title.
Click the map marker to show the infoWindow works fine. Click the search result in the list of results generated after searching, does not.
I'm using geoJSON to load the locations.
...ANSWER
Answered 2020-Feb-22 at 17:15You have all the data needed to open the InfoWindow on click of the sidebar.
Do the same thing done when the marker is clicked:
QUESTION
I am trying to find missing sequences in a CSV File and here is the code i have
...ANSWER
Answered 2019-Dec-12 at 15:11Just replace your query with this line of code it will show you the results.
QUESTION
I'm working with a decade old website that hosts a database with a search function. I was having issues with search function as it would return the following error: The used table type doesnβt support FULLTEXT indexes. I quick search deemed that the table was using the wrong engine type and I switched it from InnoDB to MyISAM. The search function then worked perfectly. However, a few moments later and the search function had stopped working. The table had been reverted back to InnoDB. I took a closer look at the code on the site and it appears that a page called KT_MXSearch.class.php appears to cycle, DROP/CREATE, the table 'src_cache_cah' which is used to house the potential results. I'm trying to have the the code stop from changing back from MyISAM. I'm a noob at PHP and this is a bit overwhelming so I'm hoping someone here may be able to help. The database runs on MySQL 5.5.47 - Maria DB and we can't upgrade versions. Thanks for reading. Here is the code:
...ANSWER
Answered 2019-Feb-15 at 00:25This is generally not a PHP problem, your CREATE TABLE
statements don't specify a storage engine (which they probably should if they rely on MyISAM features).
A quick look at the docs leaves you with 2 possible solutions:
- Add the required storage engine to the CREATE TABLE statement
- Change the default storage engine
If you omit the ENGINE option, the default storage engine is used. The default engine is InnoDB as of MySQL 5.5.5 (MyISAM before 5.5.5). You can specify the default engine by using the --default-storage-engine server startup option, or by setting the default-storage-engine option in the my.cnf configuration file.
QUESTION
I am new to Spark distributed development. I'm attempting to optimize my existing Spark job which takes up to 1 hour to complete.
Infrastructure:
- EMR [10 instances of r4.8xlarge (32 cores, 244GB)]
- Source Data: 1000 .gz files in S3 (~30MB each)
- Spark Execution Parameters [Executors: 300, Executor Memory: 6gb, Cores: 1]
In general, the Spark job performs the following:
...ANSWER
Answered 2019-Jan-21 at 13:43Before looking at the metrics, I would try the following change to your code.
QUESTION
I'd like to combine 2 Arrays with array_combine. I want that the values of Array1 are my keys and the values of Array2 are my values. The values come from a .yml-file which have componentgroup as Key and componentname as Value
...ANSWER
Answered 2018-Jul-24 at 14:05$yamlMap = [];
foreach ($yaml['components'] as $yamlComponent) {
$key = $yamlComponent['cachet']['componentgroup'];
$value = $yamlComponent['cachet']['componentname'];
// Lets initialize the key to be an array so that we may collect multiple values
if(!array_key_exists($key, $yamlMap)) {
$yamlMap[$key] = [];
}
// lets add the value to the map under the key
$yamlMap[$key][] = $value;
}
QUESTION
I'm trying to run the open source cachet status page within Kubernetes via this tutorial https://medium.com/@ctbeke/setting-up-cachet-on-google-cloud-817e62916d48
2 docker containers (cachet/nginx) and Postgres are deployed to a pod on GKE but the cachet container fails with the following CrashLoopBackOff error
Within the docker-compose.yml file its set to APP_KEY=${APP_KEY:-null} and iβm wondering if I didnβt set an environment variable I should have.
Any help with configuring the cachet docker file would be much appreciated! https://github.com/CachetHQ/Docker
...ANSWER
Answered 2018-Jul-08 at 23:37Yes, you need to generate a key.
In the entrypoint.sh
you can see that the bash script generates a key for you:
https://github.com/CachetHQ/Docker/blob/master/entrypoint.sh#L188-L193
It seems there's a bug in the Dockerfile here. Generate a key manually and then set it as an environment variable in your manifest.
There's a helm chart you can use in development here: https://github.com/apptio/helmcharts/blob/cachet/devel/cachet/templates/secrets.yaml#L12
QUESTION
I've seen few questions on SO about caching sql tables but none of them seems to be exactly answering my question.
The resulting dataframe from a query (from sqlContext.sql("...")) does not seems to be cachable like a regular dataframe.
Here is some example code (spark 2.2):
...ANSWER
Answered 2018-May-23 at 18:59After a while, I think it may be useful to post an answer to my question.
The trick is to truncate relation lineage with a new dataframe.
For that, I call spark.createDataFrame(df.rdd, df.schema).cache()
.
Others have suggested to call rdd.cache.count
but that seems to be a lot more inefficient than creating a new one without materializing the underlying rdd.
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