savepoint | An implementation of savepoints for Python , to avoid
kandi X-RAY | savepoint Summary
kandi X-RAY | savepoint Summary
A context manager that creates savepoints, avoiding recalculating expensive parts of the code. Useful if you’re running a script several times while developing it.
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Top functions reviewed by kandi - BETA
- Enter the current scope .
- Exit the current scope .
- Initialize the scope .
savepoint Key Features
savepoint Examples and Code Snippets
Community Discussions
Trending Discussions on savepoint
QUESTION
I am trying to create a stored procedure in oracle 12c database and I am getting error when I am running code to store the procedure.
PLS-00103: Encountered the symbol "CREATE" when expecting one of the
There are multiple stack overflow question already asked on this topic. but they suggest some different syntax. which is deviation from actual oracle documentation. and even those didn't worked for me
I checked for documentation on multiple website including oracle documentation. oracle documetation suggest syntax as following Oracle STORED PROCEDURE DOCUMENTATION so I as per the syntax I wrote the following procedure.
...ANSWER
Answered 2022-Mar-29 at 13:06You cant use directly sql ddl statements in plsql block, you can do the same thing using dynamic sql with the "EXECUTE IMMEDIATE" statement like this:
QUESTION
I have tried to log info about states that recovered when I start a Flink app using savepoints. I see that the app was started using a savepoint correctly. But I can't log state values that were recovered.
The app calculates how many products were bought.
Can I use CheckpointedFunction in such way? I see that context.isRestored() return true, but the checkpointedState is always empty. Where do I misunderstand something?
...ANSWER
Answered 2022-Mar-28 at 19:02I'm afraid that's not how this works, and there's no straightforward way to see the key/value pairs that are being restored to the age-statistic ValueState.
You could, however, use the State Processor API to examine the state stored in the savepoint. Or you could change ProductStatisticFunction into a KeyedBroadcastProcessFunction and use applyToKeyedState to examine the live state values whenever you want to while the job is running.
QUESTION
I´m forcing an error in qry2 so that a can run qry3 suposing it could rollback to save_1 but it doesn´t. Any catch? Using PostgreSql 14.2
...ANSWER
Answered 2022-Mar-23 at 14:12try:
cursor = conn.cursor()
cursor.execute(qry1)
conn.commit()
QUESTION
We make use of some deferred constraint triggers in our application and I was hoping to write some tests for them using pgTap. For database tests, we like to wrap things inside of a transaction so that everything is isolated and cleaned up at the end, but this poses a problem for deferred constraint triggers as they don't seem to fire unless the transaction is committed (by design).
Is there any way to get them to fire using savepoints? I attempted something simple like below but it still seems like the deferred trigger won't fire unless I commit the outer transaction.
...ANSWER
Answered 2022-Mar-01 at 21:31You can issue SET CONSTRAINTS ALL IMMEDIATE right before the end of the transaction, which will lead to the immediate execution of the deferred constraints.
QUESTION
I'm working on rewriting the test suite for a large application using pytest and looking to have isolation between each test function. What I've noticed is, multiple calls to commit inside a SAVEPOINT are causing records to be entered into the DB. I've distilled out as much code as possible for the following example:
init.py
...ANSWER
Answered 2022-Feb-23 at 17:04With the help of SQLAlchemy's Gitter community I was able to solve this. There were two issues that needed solving:
- The
after_transaction_endevent was being registered for each individual test but not removed after the test ended. Because of this multiple events were being invoked between each test. - The
_dbbeing yielded from thedbfixture was inside the app context, which it shouldn't have been.
Updated conftest.py:
QUESTION
declare
cnt number;
begin
select count(*)
into cnt
FROM employee;
IF cnt = 0 THEN
DELETE employee;
COMMIT;
EXCEPTION
WHEN others THEN
log_error_local(k_sub_module, l_step||' '||sqlerrm);
raise;
END IF;
end
ANSWER
Answered 2022-Feb-21 at 14:32To fix your syntax issues, you can wrap the contents of the IF .. THEN statement in a BEGIN/END block:
QUESTION
I am wondering whether empty data files in savepoints created by Flink (as well as checkpoints for the HashMapStateBackend) are an expected thing or wether they point towards problems with either Flink itself, the jobs we are running or the storage system we are using for both checkpoints and savepoints.
Here is a bit of context on why I am asking this and under which circumstances such empty files are observed:
We are having issues with a Flink setup we run in production. At seemingly random (but currently not rare) occasions flink fails to restore from a checkpoint or savepoint.
The error messages logged boil down to something like this:
...ANSWER
Answered 2022-Feb-14 at 20:23I am almost certain that an empty data file indicates a problem here: Flink writes the state that is less than state.storage.fs.memory-threshold into _metadata. So if there is a data file, it should be larger than the threshold. Hard to say where the problem is, though. Did you check your storage system: do you have enough space there?
QUESTION
When I enter employee_id, the salary does not increase by 20%, it changes to 6336$ regardless of job_title or Salary amount. Is it because of wrong IF Statement? How can I solve this problem? Also, there is a yellow wavy line under SELECT. What does it mean? I am using Oracle SQL Developer.
My code:
...ANSWER
Answered 2022-Feb-03 at 22:41Your UPDATE statement is outside the IF checking for country & title; it updates everyone's salary with the last new_sal the loop detected. Move it inside the IF..ENDIF.
QUESTION
I have to create a procedure that will raise employees salaries. First, it asks user to enter employee_id. If his country is United States of America and job title is Administration Assistant or Stock Manager , then raise salary by 20%. Otherwise rollback.
I have a problem with creating a procedure. I don't know what to do next. Now there is an ERROR: 25/5 PL/SQL: Statement ignored 25/112 PLS-00382: expression is of wrong type Could you help me?
This is my code:
...ANSWER
Answered 2022-Feb-01 at 18:19your and/or is incorrect. change to this:
QUESTION
Curious to know how elasticsearch sink connector behaves when a recovery from a savepoint on Flink is completed.
Would it delete/update the documents on ES sink destination by reverting the commits up to the point of savepoint time or should some other mechanism recover ES index for them to sync up again?
I can generalize this question to other sink connectors as well, such as Kafka.
...ANSWER
Answered 2022-Jan-29 at 06:55Flink can support exactly once delivery through two-phase commit, and end-to-end exactly once delivery also need connector guarantee
Kafka Source and Sink support exactly once delivery，but es connector only support at lease once delivery，after es sink is restored from savepoint, there will be no reverting operation
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install savepoint
You can use savepoint like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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