2949959 - "Could not complete job. org.eclipse.swtSWTException Invalid thread access" when calling APL procedures

• You have installed SAP HANA AFL.

• You are following section Calling PAL Procedures of the SAP HANA Predictive Analysis Library (PAL) guide.

• You execute any type of PAL procedures, including types Decision Tree, Support Vector Machine, or Random Forest as follows:

CALL _SYS_AFL.PAL_DECISION_TREE (PAL_DT_DATA_TBL, #PAL_PARAMETER_TBL, PAL_DT_MODEL_TBL, ?, ?, ?, ?) WITH OVERVIEW;
CALL _SYS_AFL.PAL_SVM(PAL_SVM_DATA_TBL,#PAL_PARAMETER_TBL,PAL_SVM_MODEL_TBL_EX1,?,?) WITH OVERVIEW;
CALL SYS.AFLLANG_WRAPPER_PROCEDURE_CREATE (‘AFLPAL’, ‘RANDOMFORESTTRAIN’, ‘<schema_name>’, '<procedure_name>', <signature_table>);

• The output is always this error:

Could not complete job. org.eclipse.swt.SWTException Invalid tread access

• The error occurs in HANA Studio and SAP HANA Tools for Eclipse.

• The error does not occur from the Web-based Development Workbench or the Web IDE.

• SAP HANA Database
• SAP HANA Studio 

SAP HANA, Application Function Library, AFL, Predictive Analysis Library, PAL, PAL Procedures, SAP HANA Studio, Eclipse, Web-based Development Workbench, Web IDE , KBA , HAN-DB-AFL-PAL , SAP HANA Predictive Analysis Library , Problem