Report synchronization process enter in a loop and cannot be completed

Hi guys,

I'm trying to update a report including a new table but unfortunately synchronization process enter in a loop and cannot be completed.

I will explain a bit more. The “confirm change” windows pop up as usual telling me that a new data set for report node is found. Anyway if I push the “apply” button to synchronize the new table (a very small one containing 8 rows & 3 columns), the process enter in a loop and it doesn't complete (as a test I let it running during more than 36 hours).

I realize it enter in a loop because it write the following messages in the log file after pressing the apply button:

 

WARN KNIME-Node-Usage-Writer NodeTimer$GlobalNodeStats Failed to write node usage stats to file.

WARN pool-1-thread-1 KNIMEApplication$3 Potential deadlock in SWT Display thread detected. Full thread dump will follow as debug ouput.

WARN KNIME-Worker-2 RowID No row key column selected generate a new one

WARN KNIME-Worker-19 RowID No row key column selected generate a new one

WARN KNIME-Worker-18 Counting Loop Start Errors overwriting node settings with flow variables: Unknown variable "Total molecules"

WARN KNIME-Worker-2 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-14 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-19 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-10 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-18 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-4 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-5 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-2 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-8 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-12 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-16 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-9 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-15 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-3 GroupBy No grouping column included. Aggregate complete table.

WARN KNIME-Worker-14 GroupBy No grouping column included. Aggregate complete table.

…


Please, can anybody help me with this? The underlying workflow is complex and it takes many hours to be calculated.

Thanks in advance,

Gio

Hi Gio,

Can you also paste the relevant part from the knime.log here (where it also shows DEBUG output)?

Also, can you confirm this problem with 3.0, which will be released shortly.

Thanks,
   Bernd

PS: Cross reference https://tech.knime.org/forum/knime-reporting/reporting-tool-in-knime-so-so-slow

Hi Bernd,

Thank you for your answer and sorry to reply you so late. Actually my workflow is considerably large and when I press the apply button it generates a huge amount of log lines, some of which can contain sensible information. Please, can you tell me which part of the log would be relevant for you?

Best,

Gio

Hi Gio,

Try to locate this sentence "Potential deadlock in SWT Display thread detected". Below this you should find a block with indented text, which are the call stacks. That's the block we need.

- Bernd