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Short Description
RunGraph Attributes
See also

Short Description

RunGraph runs CloverETL graphs. Graph names can be specified in the component attribute or received through the input port.

Component Same input metadata Sorted inputs Inputs Outputs Each to all outputs [1] Java CTL Auto-propagated metadata

[1]  Component sends each data record to all connected output ports.



Port typeNumberRequiredDescriptionMetadata
For graph names and Clover command line arguments.Input Metadata for RunGraph
For information about a graph execution.Output Metadata for RunGraph
For information about an unsuccessful graph execution.Output Metadata for RunGraph

Information about a successful execution of the specified graph is sent to the first output port.

Information about an unsuccessful execution of the specified graph is sent to the second output port.


Metadata cannot be propagated through the RunGraph component.

The component has metadata templates assigned to all its ports.

Input metadata

Metadata on the input port must have at least 2 field. The first two metadata fields must be string.

Table 63.5. Input Metadata for RunGraph

Field numberField nameData typeDescription
0<anyname1>stringThe name of the graph to be executed, including the path.

Clover command line argument. Warning: Arguments sent in this field are ignored when the Same JVM attribute is true (see RunGraph Attributes).

Output Metadata

Both output ports must have the same metadata. The metadata on the output ports can have additional fields, the additional fields must be placed after the metadata fields from the template.

Table 63.6. Output Metadata for RunGraph

Field numberField nameData typeDescription
0graphstringThe name of the graph to be executed, including the path.

Result of graph execution (Finished OK, Aborted, or Error)

2descriptionstringDetailed description of a graph fail.
3messagestringThe value of org.jetel.graph.Result
4durationinteger, long, or decimalThe duration of a graph execution in milliseconds

Identification of the execution of the graph which runs on CloverETL Server.

RunGraph Attributes

AttributeReqDescriptionPossible values
Graph URL [1]

The name of one graph, including the path, that should be executed by the component. Information about success or fail is sent to the first or the second output port, respectively.

The same JVM 

By default, the same JVM instance is used to run the specified graphs. If switched to false, graph(s) run as external processes. When working in the server environment, this attribute always has to be true (thus, you cannot pass graph arguments through field 1 of port 0, see Ports).

true (default) | false
Graph parameters to pass 

Parameters that are used by executed graphs. List a sequence separated by a semicolon. If the attribute The same JVM is switched to false, this attribute is ignored. For more information, see Details .

Alternative JVM command [2]

Command line to execute external process. If you want to give more memory to individual graphs that should be run by this RunGraph component, type in java -Xmx1g -cp or equivalent according to the maximum memory needed by any of the specified graphs. The -cp suffix is necessary, since the classpath is automatically appended to your command line and the classpath attribute can differ between various JVM implementations.

java -cp (default) | other java command
Log file URL 

Name of the file, including path, containing the log of external processes. The logging will be performed to the specified file independently on the value of the attribute The same JVM. If The same JVM is set true (the default setting), logging will also be performed to console. If it is switched to false, logging to console will not be performed and logging information will be written to the specified file. This attribute is ignored for the Server environment. See URL File Dialog.

Create directories 

If set to true, non-existing directories in the Log file URL attribute path are created.

false (default) | true
Append to log file[2]

By default, data in the specified log file is overwritten on each graph run.

false (default) | true
Graph execution class[2]

Full class name to execute graph(s).

org.jetel.main.runGraph (default) | other execution class
Command line arguments[2]

Arguments of a Java command to be executed when running graph(s).

Ignore graph fail 

By default, if the execution of any of the specified graphs fails, the graph with RunGraph (that executes them) fails too. If this attribute is set to true, failures of each executed graph are ignored.

false (default) | true

[1]  Either Graph URL must be specified or the input port connected.

[2]  These attributes are applied only if the attribute The same JVM is set to false.


RunGraph works in two modes. You can define a graph to run using the Graph URL attribute or send it using input edge.

Processing of command line arguments

All command line arguments passed to the RunGraph component (either as the second field of an input record or as the cloverCmdLineArgs component property) are regarded as a space delimited list of arguments which can be quoted. Moreover, the quote character itself can be escaped by a backslash.

Example 63.2. Working with Quoted Command Line Arguments

Let us have the following list of arguments:

firstArgument "second argument with spaces" "third argument with spaces and \" a quote"

The resulting command line arguments which will be passed to the child JVM are:

1) firstArgument

2) second argument with spaces

3) third argument with spaces and " a quote

Notice in 2), the argument is actually unquoted. That grants an OS-independent approach and smooth run on all platforms.

Error logging

If the executed graph fails, the caused error message and exception stacktrace are printed out to a standard graph log. If this graph failure caused the parent graph to fail (the Ignore graph fail attribute is false) the caused error message is printed out on ERROR logging level, otherwise on INFO level.

Notes and limitations

RunGraph cannot run a graph with subgraphs in separate JVM.

Details of graphs running in separate JVM cannot be seen in execution view of the component.

Graphs running in separate JVM do not send runId to the output.

RunGraph on CloverETL Server

You cannot run a graph in separate JVM on CloverETL Server.


Running a graph using RunGraph
Running several graphs using RunGraph

Running a graph using RunGraph

Run graph ProcessInvoices.grf.


Use the Graph URL attribute to define the graph to be run and do not connect an input edge.

Graph URL${GRAPH_DIR}/ProcessInvoices.cdf

Running several graphs using RunGraph

Run several graphs using the RunGraph component.


Send graph URLs to the RunGraph using the input edge. Do not fill in the attribute Graph URL.



Previous version of CloverETL requires to specify Command line arguments if the path to the graph is set up using the Graph URL attribute.

See also

Common Properties of Components
Specific Attribute Types
Others Comparison