I'm running Apache Flink version 1.12.7 and configured Streaming Execution Environment with number of task slots for task manager = 3 (just experimenting) but unable to see the output of a file read by the environment. Instead, as seen in the logs, the Execution Graph is stuck as SCHEDULED and does not get into RUNNING state.
Note that if no configuration is passed in the properties file, everything works good and output is seen as environment is able to read the file since Execution Graph get switched to RUNNING state.
The code is as follows :
ParameterTool parameters = ParameterTool.fromPropertiesFile("src/main/resources/application.properties");
Configuration config = Configuration.fromMap(parameters.toMap());
TaskExecutorResourceUtils.adjustForLocalExecution(config);
StreamExecutionEnvironment env =
StreamExecutionEnvironment.getExecutionEnvironment(config);
System.out.println("Config Params : " + config.toMap());
DataStream<String> inputStream =
env.readTextFile(FILEPATH);
DataStream<String> filteredData = inputStream.filter((String value) -> {
String[] tokens = value.split(",");
return Double.parseDouble(tokens[3]) >= 75.0;
});
filteredData.print(); // no o/p seen if configuration object is set otherwise everything works as expected
env.execute("Filter Country Details");
Need help in understanding this behaviour and what changes should be made in order that the output gets printed along with having some custom configuration. Thank you.
Okay..So found the answer to the above puzzle by referring to some links mentioned below.
Solution : So I set the parallelism (env.setParallelism) in the above code just after configuring the streaming execution environment and the file was read with output generated as expected.
Post that, experimented with a few things :
set parallelism equal to number of task slots = everything worked
set parallelism greater than number of task slots = intermittent results
set parallelism less than number of task slots = intermittent results.
As per this link corresponding to Flink Architecture,
A Flink cluster needs exactly as many task slots as the highest parallelism used in the job
So its best to go with no. of task slots for a task manager equal to the parallelism configured.
I am executing a script which captures order search activity in Salesforce QA sandbox with Chrome Webdriver (latest ver.). The steps are written in Selenium JUnit code, the Selenium project is exported as JAR and the JAR is executed in JMeter 5.4.1, using JUnit Request Sampler (JUnit ver. 4.13.2). During test run, each step executed by chrome window is captured in the Log Viewer of JMeter (as INFO).
There is one specific variable declared [long ElapsedTime] in the selenium code which captures the Elapsed Time between Search ID entered and ID record found:
*log.info(threadName + ":: limsId value is: " + limsId);
long endTime = System.currentTimeMillis();
**long timeElapsed = endTime - startTime;
log.info(threadName + ":: Execution time in milliseconds: " + timeElapsed);**
driver.close();*
and is as displayed in Log Viewer as below:
*2021-05-31 10:47:39,139 INFO s.QATest: Thread Group 1-1:: Waiting over.....
2021-05-31 10:47:39,184 INFO s.QATest: Thread Group 1-1:: limsId value is: ADM3064A2
**2021-05-31 10:47:39,185 INFO s.QATest: Thread Group 1-1:: Execution time in milliseconds: 20068***
This value is only captured in Logs and not in any Listener in JMeter. Unlike Webscript, I am not sure if Transaction controller for each flow can be added.
How can I get this value displayed exclusively either in a Listener/ or CSV file or JTL file, from where I can create a HTML Report which also shows this intermediate result.
Add the next line to user.properties file (lives in "bin" folder of your JMeter installation)
sample_variables=timeElapsed
Add the next line to your JUnit test:
org.apache.jmeter.threads.JMeterContextService.getContext().getVariables().put("timeElapsed", String.valueOf(timeElapsed));
This way next time when you run your JMeter test in command-line non-GUI mode you will see an extra column called timeElapsed containing the value of your timeElapsed variable for each and every sample result.
More information: Sample Variables property
You should be able to plot the value as the custom chart of the HTML Reporting Dashboard
I am reading lines from parquet for that I am using source functions similar to this one , however when I try counting number of lines being processed, nothing is printed although the job is completed :
val env: StreamExecutionEnvironment = StreamExecutionEnvironment.getExecutionEnvironment
env.setStreamTimeCharacteristic(TimeCharacteristic.ProcessingTime)
lazy val stream: DataStream[Group] = env.addSource(new ParquetSourceFunction)
stream.map(_ => 1)
.timeWindowAll(Time.seconds(180))
.reduce( _ + _).print()
The problem is the fact that You are using ProcessingTime, so basically whenever You are using the EventTime when the file is finished Flink is emitting a watemark with Long.Max value so that all windows are closed, but this does not happen when working with ProcessingTime, so simply speaking Flink doesn't wait for Your window to close and that's why You are not getting any valuable results.
You may want to try to switch to DataSet API, which should be more appropriate for the task You want to achieve.
Alternatively, You may try to play with EventTime and assign static Watermark, since Flink at the end will still emit watermark with Long.Max value.
I have a laravel queue setup with a
database
Connection. Note this problem is also on redis. But i am currently using the database connection for the
failed_jobs
Table to help me check any errors that occur during the queue process.
The problem i have is that the queue stops working after a few jobs without any message showing why. But when i restart the command (php artisan queue:work) it picks up the remaining jobs. And continues. (But stops again later)
The job is configured with these values
public $tries = 1;
public $timeout = 10;
The job code is, (Not original code)
public function handle()
{
try {
$file = //function to create file;
$zip = new ZipArchive();
$zip->open(//zip_path);
$zip->addFile(//file_path, //file_name);
$zip->close();
#unlink(//remove file);
} catch (\Exception $e) {
Log::error($e);
}
}
And the failed function is setup like this:
public function failed(\Exception $exception)
{
Log::error($exception);
$this->fail($exception);
$this->delete();
}
But my there is no failed_job row, And my log is empty
Edit: I added simple info logs after every line of code. And every time i start the queue, It stops after the last line. So the code runs correct. So laravel doesn't start the new job after that
so what you need here to solve the issue is to do the following steps :
go to bootstrap/cache/ remove all file .PHP
go to the src and run php artisan queue:restart
Now after adding the snippet, we need to trigger the following commands respectively:
sudo supervisorctl reread (to check the file content and make sure
that the snippet is correctly set)
sudo supervisorctl update (release the config changes under the supervisor)
sudo supervisorctl restart all (re-trigger the queues so that the newly created queue gets initialized and start picking up messages respectively)
Did you tried queue:listen ?
php artisan queue:listen
Also i guess you need the Supervisor to keep your worker alive.
I'm using SQL Server 2005, and creating ftp tasks within SSIS.
Sometimes there will be files to ftp over, sometimes not. If there are no files, I don't want the task nor the package to fail. I've changed the arrow going from the ftp task to the next to "completion", so the package runs through. I've changed the allowed number of errors to 4 (because there are 4 ftp tasks, and any of the 4 directories may or may not have files).
But, when I run the package from a job in agent, it marks the job as failing. Since this will be running every 15 minutes, I don't want a bunch of red x's in my job history, which will cause us to not see a problem when it really does occur.
How do I set the properties in the ftp task so that not finding files to ftp is not a failure? The operation I am using is "Send files".
Here is some more information: the files are on a server that I don't have any access through except ftp. And, I don't know the filenames ahead of time. The user can call them whatever they want. So I can't check for specific files, nor, I think, can I check at all. Except through using the ftp connection and tasks based upon that connection. The files are on a remote server, and I want to copy them over to my server, to get them from that remote server.
I can shell a command level ftp in a script task. Perhaps that is what I need to use instead of a ftp task. (I have changed to use the ftp command line, with a parameter file, called from a script task. It gives no errors when there are no files to get. I think this solution is going to work for me. I'm creating the parameter file dynamically, which means I don't need to have connection information in the plain text file, but rather can be stored in my configuration file, which is in a more secure location.)
I understand that you have found an answer to your question. This is for other users who might stumble upon this question. Here is one possible way of achieving this. Script Task can be used to find the list of files present in an FTP folder path for a given pattern (say *.txt). Below example shows how this can be done.
Step-by-step process:
On the SSIS package, create an FTP Connection named FTP and also create 5 variables as shown in screenshot #1. Variable RemotePath contains the FTP folder path; LocalPath contains the folder where the files will be downloaed to; FilePattern contains the file pattern to find the list of files to download from FTP server; FileName will be populated by the Foreach loop container but to avoid FTP task design time error, it can be populated with / or the DelayValidation property on the FTP Task can be set to True.
On the SSIS package, place a Script Task, Foreach Loop container and FTP Task within the Foreach Loop container as shown in screenshots #2.
Replace the Main() method within the Script Task with the code under the Script Task Code section. Script Task will populate the variable ListOfFiles with the collection of files matching a given pattern. This example will first use the pattern *.txt, which yields no results and then later the pattern *.xls that will match few files on the FTP server.
Configure the Foreach Loop container as shown in screenshots #3 and #4. This task will loop through the variable **ListOfFiles*. If there are no files, the FTP task inside the loop container will not execute. If there are files, the FTP task inside the loop container will execute for the task for the number of files found on the FTP server.
Configure the FTP Task as shown in screenshots #5 and #6.
Screenshot #7 shows sample package execution when no matching files are found for the pattern *.txt.
Screenshot #8 shows the contents of the folder C:\temp\ before execution of the package.
Screenshot #9 shows sample package execution when matching files are found for the pattern *.xls.
Screenshot #10 shows the contents of the FTP remote path /Practice/Directory_New.
Screenshot #11 shows the contents of the folder C:\temp\ after execution of the package.
Screenshot #12 shows the package failure when provided with incorrect Remote path.
Screenshot #13 shows the error message related to the package failure.
Hope that helps.
Script Task Code:
C# code that can be used in SSIS 2008 and above.
Include the using statement using System.Text.RegularExpressions;
public void Main()
{
Variables varCollection = null;
ConnectionManager ftpManager = null;
FtpClientConnection ftpConnection = null;
string[] fileNames = null;
string[] folderNames = null;
System.Collections.ArrayList listOfFiles = null;
string remotePath = string.Empty;
string filePattern = string.Empty;
Regex regexp;
int counter;
Dts.VariableDispenser.LockForWrite("User::RemotePath");
Dts.VariableDispenser.LockForWrite("User::FilePattern");
Dts.VariableDispenser.LockForWrite("User::ListOfFiles");
Dts.VariableDispenser.GetVariables(ref varCollection);
try
{
remotePath = varCollection["User::RemotePath"].Value.ToString();
filePattern = varCollection["User::FilePattern"].Value.ToString();
ftpManager = Dts.Connections["FTP"];
ftpConnection = new FtpClientConnection(ftpManager.AcquireConnection(null));
ftpConnection.Connect();
ftpConnection.SetWorkingDirectory(remotePath);
ftpConnection.GetListing(out folderNames, out fileNames);
ftpConnection.Close();
listOfFiles = new System.Collections.ArrayList();
if (fileNames != null)
{
regexp = new Regex("^" + filePattern + "$");
for (counter = 0; counter <= fileNames.GetUpperBound(0); counter++)
{
if (regexp.IsMatch(fileNames[counter]))
{
listOfFiles.Add(remotePath + fileNames[counter]);
}
}
}
varCollection["User::ListOfFiles"].Value = listOfFiles;
}
catch (Exception ex)
{
Dts.Events.FireError(-1, string.Empty, ex.ToString(), string.Empty, 0);
Dts.TaskResult = (int) ScriptResults.Failure;
}
finally
{
varCollection.Unlock();
ftpConnection = null;
ftpManager = null;
}
Dts.TaskResult = (int)ScriptResults.Success;
}
VB code that can be used in SSIS 2005 and above.
Include the Imports statement Imports System.Text.RegularExpressions
Public Sub Main()
Dim varCollection As Variables = Nothing
Dim ftpManager As ConnectionManager = Nothing
Dim ftpConnection As FtpClientConnection = Nothing
Dim fileNames() As String = Nothing
Dim folderNames() As String = Nothing
Dim listOfFiles As Collections.ArrayList
Dim remotePath As String = String.Empty
Dim filePattern As String = String.Empty
Dim regexp As Regex
Dim counter As Integer
Dts.VariableDispenser.LockForRead("User::RemotePath")
Dts.VariableDispenser.LockForRead("User::FilePattern")
Dts.VariableDispenser.LockForWrite("User::ListOfFiles")
Dts.VariableDispenser.GetVariables(varCollection)
Try
remotePath = varCollection("User::RemotePath").Value.ToString()
filePattern = varCollection("User::FilePattern").Value.ToString()
ftpManager = Dts.Connections("FTP")
ftpConnection = New FtpClientConnection(ftpManager.AcquireConnection(Nothing))
ftpConnection.Connect()
ftpConnection.SetWorkingDirectory(remotePath)
ftpConnection.GetListing(folderNames, fileNames)
ftpConnection.Close()
listOfFiles = New Collections.ArrayList()
If fileNames IsNot Nothing Then
regexp = New Regex("^" & filePattern & "$")
For counter = 0 To fileNames.GetUpperBound(0)
If regexp.IsMatch(fileNames(counter)) Then
listOfFiles.Add(remotePath & fileNames(counter))
End If
Next counter
End If
varCollection("User::ListOfFiles").Value = listOfFiles
Dts.TaskResult = ScriptResults.Success
Catch ex As Exception
Dts.Events.FireError(-1, String.Empty, ex.ToString(), String.Empty, 0)
Dts.TaskResult = ScriptResults.Failure
Finally
varCollection.Unlock()
ftpConnection = Nothing
ftpManager = Nothing
End Try
Dts.TaskResult = ScriptResults.Success
End Sub
Screenshot #1:
Screenshot #2:
Screenshot #3:
Screenshot #4:
Screenshot #5:
Screenshot #6:
Screenshot #7:
Screenshot #8:
Screenshot #9:
Screenshot #10:
Screenshot #11:
Screenshot #12:
Screenshot #13:
Check this link that describes about gracefully handling task error in SSIS Package.
I had almost the same problem but, with retrieving files. I wanted the package NOT to fail when no files were found on FTP server. The above link stops the error bubbling up and causing the package to fail; something you would have thought FailPackageOnError=false should have done? :-S
Hope this solves it for you too!
I just had this issue, after reading some of the replies here, nothing really sorted out my problem and the solutions in here seem insane in terms of complexity.
My FTP task was failing since I did not allow overwriting files, lets say the job was kicked off twice in a row, the first pass will be fine, because some files are transferred over but will fail if a local file already exists.
My solution was simple:
Right click task - Properties
Set ForceExecutionResult = "Success"
(I can't accept my own answer, but this was the solution that worked for me.)
It may not be the best solution, but this works.
I use a script task, and have a bunch of variables for the ftp connection information, and source and destination directories. (Because, we'll be changing the server this is run on, and it will be easier to change in a config package.)
I create a text file on the fly, and write the ftp commands to it:
Dim ftpStream As StreamWriter = ftpFile.CreateText()
ftpStream.WriteLine(ftpUser)
ftpStream.WriteLine(ftpPassword)
ftpStream.WriteLine("prompt off")
ftpStream.WriteLine("binary")
ftpStream.WriteLine("cd " & ftpDestDir)
ftpStream.WriteLine("mput " & ftpSourceDir)
ftpStream.WriteLine("quit 130")
ftpStream.Close()
Then, after giving it enough time to really close, I start a process to do the ftp command:
ftpParameters = "-s:" & ftpParameterLoc & ftpParameterFile & " " & ftpServer
proc = System.Diagnostics.Process.Start("ftp", ftpParameters)
Then, after giving it some more time for the ftp process to run, I delete the temporary ftp file (that has connection information in it!).
If files don't exist in the source directory (the variable has the \\drive\dir\*.* mapping), then there is no error. If some other error happens, the task still fails, as it should.
I'm new to SSIS, and this may be a kludge. But it works for now. I guess I asked for the best way, and I'll certainly not claim that this is it.
As I pointed out, I have no way of knowing what the files are named, or even if there are any files there at all. If they are there, I want to get them.
I don't have a packaged answer for you, but since no one else has posted anything yet...
You should be able to set a variable in an ActiveX script task and then use that to decide whether or not the FTP task should run. There is an example here that works with local paths. Hopefully you can adapt the concept (or if possible, map the FTP drive and do it that way).
1) Set the FTP Task property ForceExecutionResult = Success
2) Add this code to FTP Task OnError event handler.
public void Main()
{
// TODO: Add your code here
int errorCode = (int)Dts.Variables["System::ErrorCode"].Value;
if (errorCode.ToString().Equals("-1073573501"))
{
Dts.Variables["System::Propagate"].Value = false;
}
else
{
Dts.Variables["System::Propagate"].Value = true;
}
Dts.TaskResult = (int)ScriptResults.Success;
}
Put it in a ForEach container, which iterates over the files to upload. No files, no FTP, no failure.
You can redirect on failure, to another task that does nothing, ie a script that just returns true.
To do this, add the new script task, highlight your FTP task, a second green connector will appear, drag this to the script task, and then double click it. Select Failure on the Value drop down. Obviously, you'll then need to handle real failures in this script task to still display right in the Job history.
Aha, OK - Thanks for clarification. As the FTP task cannot return a folder listing it will not be possible to use the ForEach as I initially said - That only works if you're uploading X amount of files to a remote source.
To download X amount of files, you can go two ways, either you can do it entirely in .Net in a script task, or you can populate an ArrayList with the file names from within a .Net script task, then ForEach over the ArrayList, passing the file name to a variable and downloading that variable name in a standard FTP task.
Code example to suit: http://forums.microsoft.com/msdn/ShowPost.aspx?PostID=2472491&SiteID=1
So, in the above, you'd get the FileNames() and populate the ArrayList from that, then assign the ArrayList to an Object type variable in Dts.Variables, then ForEach over that Object (ArrayList) variable using code something like: http://www.sqlservercentral.com/articles/SSIS/64014/
You can use the free SSIS FTP Task++ from eaSkills. It doesn't throw an error if the file or files don't exist, it support wild cards and gives you the option to download and delete if you need to do so.
Here's the link to the feature page:
http://www.easkills.com/ssis/ftptask
This is another solution that is working for me, using built-in stuff and so without manually re-writing the FTP logic:
1) Create a variable in your package called FTP_Error
2) Click your FTP Task, then click "Event Handlers" tab
3) Click within the page to create an event handler for "FTP Task/OnError" - this will fire whenever there is trouble with the FTP
4) From the toolbox, drag in a Script Task item, and double-click to open that up
5) In the first pop-up, ReadOnlyVariables - add System::ErrorCode, System::ErrorDescription
6) In the first pop-up, ReadWriteVariables - add your User::FTP_Error variable
7) Edit Script
8) In the script set your FTP_Error variable to hold the ReadOnlyVariables we had above:
Dts.Variables["FTP_Error"].Value = "ErrorCode:" + Dts.Variables["ErrorCode"].Value.ToString() + ", ErrorDescription=" + Dts.Variables["ErrorDescription"].Value.ToString();
9) Save and close script
10) Hit "OK" to script task
11) Go back to "Control Flow" tab
12) From the FTP task, OnError go to a new Script task, and edit that
13) ReadOnlyVariables: User::FTP_Error from before
14) Now, when there are no files found on the FTP, the error code is -1073573501
(you can find the error code reference list here: http://msdn.microsoft.com/en-us/library/ms345164.aspx)
15) In your script, put in the logic to do what you want - if you find a "no files found" code, then maybe you say task successful. If not, then task failed. And your normal flow can handle this as you wish:
if (Dts.Variables["FTP_Error"].Value.ToString().Contains("-1073573501"))
{
// file not found - not a problem
Dts.TaskResult = (int)ScriptResults.Success;
}
else
{
// some other error - raise alarm!
Dts.TaskResult = (int)ScriptResults.Failure;
}
And from there your Succeeded/Failed flow will do what you want to do with it.
An alternative is to use this FTP File Enumerator