[HOP-1905] MemoryGroupByMeta not working in Beam

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.50
• Component/s: Beam
• Labels: pre-apache
• Assignee: Unassigned
• Reporter: Maximilian Michels
• Created: 04/Oct/20 12:20
• Updated: 23/Nov/20 17:05
• Resolved: 23/Nov/20 17:05

Description

Error:

```
2020/06/09 21:12:58 - Hop - ERROR: org.apache.hop.core.exception.HopException:
2020/06/09 21:12:58 - Hop - Error preparing remote pipeline
2020/06/09 21:12:58 - Hop - org.apache.hop.pipeline.transforms.memgroupby.MemoryGroupByMeta cannot be cast to org.apache.hop.pipeline.transforms.memgroupby.MemoryGroupByMeta
2020/06/09 21:12:58 - Hop -
2020/06/09 21:12:58 - Hop - at org.apache.hop.beam.engines.BeamPipelineEngine.prepareExecution(BeamPipelineEngine.java:231)
2020/06/09 21:12:58 - Hop - at org.apache.hop.ui.hopgui.file.pipeline.HopGuiPipelineGraph.lambda$preparePipeline$9(HopGuiPipelineGraph.java:3912)
2020/06/09 21:12:58 - Hop - at java.lang.Thread.run(Thread.java:748)
2020/06/09 21:12:58 - Hop - Caused by: java.lang.ClassCastException: org.apache.hop.pipeline.transforms.memgroupby.MemoryGroupByMeta cannot be cast to org.apache.hop.pipeline.transforms.memgroupby.MemoryGroupByMeta
2020/06/09 21:12:58 - Hop - at org.apache.hop.beam.pipeline.handler.BeamGroupByStepHandler.handleStep(BeamGroupByStepHandler.java:31)
2020/06/09 21:12:58 - Hop - at org.apache.hop.beam.pipeline.HopPipelineMetaToBeamPipelineConverter.handleGenericStep(HopPipelineMetaToBeamPipelineConverter.java:362)
2020/06/09 21:12:58 - Hop - at org.apache.hop.beam.pipeline.HopPipelineMetaToBeamPipelineConverter.createPipeline(HopPipelineMetaToBeamPipelineConverter.java:209)
2020/06/09 21:12:58 - Hop - at org.apache.hop.beam.engines.BeamPipelineEngine.prepareExecution(BeamPipelineEngine.java:203)
2020/06/09 21:12:58 - Hop - ... 2 more
```