Bridge Specifications
| Vendor | Apache |
| Tool Name | Spark (with Python or Scala) |
| Tool Version | Spark 2.x |
| Tool Web Site | http://spark.apache.org/ |
| Supported Methodology | [Data Integration] Multi-Model, Data Store (Physical Data Model), (Source and Target Data Stores, Transformation Lineage, Expression Parsing) via Spark with Python or Scala File |
SPECIFICATIONS
Tool: Apache / Spark (with Python or Scala) version Spark 2.x via Spark with Python or Scala File
See http://spark.apache.org/
Metadata: [Data Integration] Multi-Model, Data Store (Physical Data Model), (Source and Target Data Stores, Transformation Lineage, Expression Parsing)
Component: ApacheSpark version 11.0.0
OVERVIEW
The purpose of this Apache Spark import bridge is to detect and parse all Spark the statements from the Python or Scala scripts
in order to generate the exact scope (data models) of the involved source and target data stores,
as well as the data flow lineage and impact analysis (data integration ETL/ELT model) between them.
REQUIREMENTS
n/a
FREQUENTLY ASKED QUESTIONS
n/a
LIMITATIONS
Refer to the current general known limitations at http://metaintegration.com/Products/MIMB/MIMBKnownLimitations.html or bundled in Documentation/ReadMe/MIMBKnownLimitations.html
SUPPORT
Provide a trouble shooting package with:
- the debug log (can be set in the UI or in conf/conf.properties with MIR_LOG_LEVEL=6)
- the metadata backup if available (can be set in the Miscellaneous parameter with option -backup)
Bridge Parameters
| Parameter Name | Description | Type | Values | Default | Scope | ||
| Directory | Select a directory with the textual files that contain the code to import. | DIRECTORY | Mandatory | ||||
| Code Language | Select the language. | ENUMERATED |
|
Python | |||
| Directory Filter | Specify a search filter for the sub directories. Use regular expressions in java format if needed (e.g. '.*_script'). Multiple conditions can be defined by using a space as a separator (e.g. 'directory1 directory2'). The condition must be escaped with double quotes if it contains any spaces inside (e.g. \"my directory\"). Negation can be defined with the preceeding dash character (e.g. '-bin'). | STRING | |||||
| File Filter | Specify a search filter for files. Use regular expressions in java format if needed (e.g. '.*\\.py'). Multiple conditions can be defined by using a space as a separator (e.g. 'file1 file2'). The condition must be escaped with double quotes if it contains any spaces inside (e.g. \"my file.py\"). Negation can be defined with the preceeding dash character (e.g. '-\\.tar\\.gz'). | STRING | |||||
| Miscellaneous | Specify miscellaneous options starting with a dash and optionally followed by parameters, e.g. -connection.cast MyDatabase1="SQL Server" Some options can be used multiple times if applicable, e.g. -connection.rename NewConnection1=OldConnection1 -connection.rename NewConnection2=OldConnection2; As the list of options can become a long string, it is possible to load it from a file which must be located in ${MODEL_BRIDGE_HOME}\data\MIMB\parameters and have the extension .txt. In such case, all options must be defined within that file as the only value of this parameter, e.g. ETL/Miscellaneous.txt GENERAL OPTIONS -m <Java Memory's maximum size> 1G by default on 64bits JRE or as set in conf/conf.properties, e.g. -m 8G -m 8000M -j <Java Runtime Environment command line options> This option must be the last one in the Miscellaneous parameter as all the text after -j is passed "as is" to the JRE, e.g. -j -Dname=value -Xms1G The following option must be set when a proxy is used to access internet (this is critical to access https://repo.maven.apache.org/maven2/ (and exceptionally a few other tool sites) in order to download the necessary third party software libraries. -j -Dhttp.proxyHost=127.0.0.1 -Dhttp.proxyPort=3128 -Dhttps.proxyHost=127.0.0.1 -Dhttps.proxyPort=3128 -Dhttp.proxyUser=user -Dhttp.proxyPassword=pass -Dhttps.proxyUser=user -Dhttps.proxyPassword=pass -jre <Java Runtime Environment full path name> It can be an absolute path to javaw.exe on Windows or a link/script path on Linux, e.g. -jre "c:\Program Files\Java\jre1.8.0_211\bin\javaw.exe" -v <Environment variable value> None by default, e.g. -v var1=value1 -v var2="value2 with spaces" -model.name <model name> Override the model name, e.g. -model.name "My Model Name" -prescript <script name> The script must be located in the bin directory, and have .bat or .sh extension. The script path must not include any parent directory symbol (..). The script should return exit code 0 to indicate success, or another value to indicate failure. For example: -prescript "script.bat arg1 arg2" -cache.clear Clears the cache before the import, and therefore will run a full import without incremental harvesting. Warning: this is a system option managed by the application calling the bridge and should not be set by users. -pppd Create the connections and connection data sets in DI/ETL design models. This feature should only be used when intending to export to another DI/ETL tool. APACHE SPARK OPTIONS -e <encoding> This value will be used to load text from the specified script files. By default, UTF-8 will be used. E.g. -e UTF-16 -e UTF-16BE -e US-ASCII -p <path name> Full path to the yaml file that defines all the entry points for the scripts to parse as well as their input parameters. The new template will be generated automatically if the file doesn't exist. Use double quotes in order to escape the path that contains spaces. |
STRING |
Bridge Mapping
Mapping information is not available