Table Reader: Unknown file store handler to UUID

[mwiegand]

Hi,

it seems a bug from 2016 reemerged.

Unknown file store handler

Hi all, I'm using a chunk loop containing a wrapped metanode that again contains a chunk loop (because of the need to convert the current row to a variable for input in Global Thresholder node of KNIME Image Processing). When running that workflow, I'm getting multiple errors: ERROR Loop End 2:84 Unknown file store handler to UUID e63fdfa8-96e9-4ddc-9d49-aa4f2b3504f3 Is this a bug? How can I work around this? Best, Jan

2025-02-23 08:30:36,372	ERROR Table Reader         3:1865     Unknown file store handler to UUID 7f8b39cc-d0e6-4661-bf66-38706b3a4b44
2025-02-23 08:30:36,373	ERROR Table Reader         3:1865     Errors while reading row 1 from file "knime_container_20250223_2470770656209070826.bin.gz": Unknown file store handler to UUID 7f8b39cc-d0e6-4661-bf66-38706b3a4b44; Suppressing further warnings.
2025-02-23 08:30:36,373	ERROR Table Reader         3:1865     Unknown file store handler to UUID 7f8b39cc-d0e6-4661-bf66-38706b3a4b44

Before writing successfully

Upon trying to read the prev. written file

Intriguingly, despite the preview indicating missing values, they were indeed present:

Here is the knime log with the stack trace:

2025-02-23 08:34:56,840 : ERROR : AWT-EventQueue-0 :  : WorkflowDataRepository : Table Reader : 3:1944 : Unknown file store handler to UUID fd71ab98-611c-4cf9-a5d3-cd735eb5a468
2025-02-23 08:34:56,841 : ERROR : AWT-EventQueue-0 :  : BufferFromFileIteratorVersion20 : Table Reader : 3:1944 : Errors while reading row 1 from file "knime_container_20250223_17911974570821324813.bin.gz": Unknown file store handler to UUID fd71ab98-611c-4cf9-a5d3-cd735eb5a468; Suppressing further warnings.
java.lang.IllegalStateException: Unknown file store handler to UUID fd71ab98-611c-4cf9-a5d3-cd735eb5a468
	at org.knime.core.node.workflow.WorkflowDataRepository.getHandlerNotNull(WorkflowDataRepository.java:190)
	at org.knime.core.data.filestore.internal.FileStoreProxy.retrieveFileStoreHandlerFrom(FileStoreProxy.java:95)
	at org.knime.core.data.filestore.FileStoreCell.retrieveFileStoreHandlersFrom(FileStoreCell.java:148)
	at org.knime.core.data.filestore.FileStoreUtil.retrieveFileStoreHandlersFrom(FileStoreUtil.java:158)
	at org.knime.core.data.filestore.FileStoreUtil.retrieveFileStoreHandlersFrom(FileStoreUtil.java:150)
	at org.knime.core.data.container.BufferFromFileIteratorVersion20$DataCellStreamReader.readDataCell(BufferFromFileIteratorVersion20.java:371)
	at org.knime.core.data.container.BufferFromFileIteratorVersion20.next(BufferFromFileIteratorVersion20.java:172)
	at org.knime.core.data.container.BufferFromFileIteratorVersion20.next(BufferFromFileIteratorVersion20.java:1)
	at org.knime.core.node.tableview.TableContentModel.cacheNextRow(TableContentModel.java:1170)
	at org.knime.core.util.ThreadUtils.getAsBooleanWithContext(ThreadUtils.java:673)
	at org.knime.core.node.tableview.TableContentModel.cacheNextRowWithContext(TableContentModel.java:1154)
	at org.knime.core.node.tableview.TableContentModel.setDataTableIntern(TableContentModel.java:451)
	at org.knime.core.node.tableview.TableContentModel.lambda$0(TableContentModel.java:342)
	at org.knime.core.util.ThreadUtils$RunnableWithContextImpl.runWithContext(ThreadUtils.java:369)
	at org.knime.core.util.ThreadUtils$RunnableWithContext.run(ThreadUtils.java:223)
	at org.knime.core.node.util.ViewUtils.invokeAndWaitInEDT(ViewUtils.java:136)
	at org.knime.core.node.tableview.TableContentModel.setDataTable(TableContentModel.java:342)
	at org.knime.filehandling.core.node.table.reader.preview.dialog.TableReaderPreviewModel.lambda$1(TableReaderPreviewModel.java:105)
	at org.knime.core.node.util.ViewUtils$3.run(ViewUtils.java:353)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
2025-02-23 08:34:56,841 : ERROR : AWT-EventQueue-0 :  : WorkflowDataRepository : Table Reader : 3:1944 : Unknown file store handler to UUID fd71ab98-611c-4cf9-a5d3-cd735eb5a468
2025-02-23 08:34:56,841 : ERROR : AWT-EventQueue-0 :  : WorkflowDataRepository : Table Reader : 3:1944 : Unknown file store handler to UUID fd71ab98-611c-4cf9-a5d3-cd735eb5a468

Worth to note that the temp folder has grown to almost 50 GB so I freed up some space lately. But since then I restarted my system and Knime several times.

Best
Mike