DataWorks:Common issues

Data backfill

• Data backfill feature overview

• Why does group execution for data backfill not work for hourly and minutely nodes?

• Why do data backfill instances not run and show a "waiting for time" status after I select a business time?

• Why does a data backfill error report that the node runtime is outside the selected business time range?

• Why are no data backfill instances generated for a node selected for data backfill?

Resource waiting

• Why do tasks wait for resources?

• Why does a task keep waiting for gateway scheduling resources?

• Why does a data integration task always show a 'wait' status?

Dry-run instances

• What is a dry-run?

• Why do dry-runs occur?

  1. Scenario 1: Dry-run cycle for weekly or monthly instances

  2. Scenario 2: Expired instances generated in real time

  3. Scenario 3: Instances set to successful

  4. Scenario 4: Instance Property Dry-Run

  5. Scenario 5: Unselected instances in a temporary workflow

  Troubleshoot dry-runs for daily scheduled tasks

Nodes that are not run

• What are the conditions that are required for a node to successfully run?

• Why is an auto triggered instance not run after its scheduling time arrives?

Node instance status

• What do I do if I cannot find the desired auto triggered node on the Cycle Task page in Operation Center?

• Why cannot I find even one instance of an auto triggered node?

• What do I do if I can find instances of other auto triggered nodes but cannot find even one instance of the desired auto triggered node?

• What do I do if the desired auto triggered node has instances but the instances are not run?

• What are the conditions that must be met to run a node?

Node freezing and unfreezing

• What happens after I freeze or unfreeze an auto triggered node or an auto triggered instance?

• Why is a frozen auto triggered node run as scheduled?

Nodes that are successfully run but have no data generated

• Scenario 1: An auto triggered node is successfully run and has operational logs

• Scenario 2: An auto triggered node is successfully run but has no operational logs

Nodes that fail to run

• General reference

  • A task configured for auto-rerun does not rerun after it fails and reports the error Task Run Timed Out, Killed by System!!!

  • A task fails with the error OSError: \[Errno 7\] Argument list too long.

• Errors for MaxCompute nodes

  • ODPS-0420095: Access Denied - Authorization Failed \[4093\], You have NO privilege to do the restricted operation on {acs:odps:\*:projects/xxxx}. Access Mode is AllDenied.

  • ODPS-0420061: Invalid parameter in HTTP request - Fetched data is larger than the rendering limitation. Please try to reduce your limit size or column number

  • How to handle out-of-order data when running a DataWorks node task with multiple threads?

• Errors for AnalyticDB for MySQL nodes How to handle an AnalyticDB for MySQL task failure when using a public resource group?

• Errors for database nodes A MySQL node reports an error: The MySQL node driver is not supported

• Errors for general nodes

  • How to view logs for for-each, do-while, and PAI nodes in Operation Center

  • A branch node fails with the error: error in your condition run fail

  • An FTP Check node task fails with the error: None Ftp connection info!!

  • An FTP Check node task fails with the error: Connect Failed

  • An FTP Check node task fails with the error: The current time has exceeded the end-check time point!

  • An FTP Check node task fails with the error: File not Exists or exceeded the end-check time point!

• Errors for resource groups How to handle the error: no available machine resources under the task resource group

Node undeployment

• Undeploy a node

• Undeploy nodes

• Confirm task undeployment

• Restore an undeployed node

Isolated nodes

• Scenario: Isolated node

• Scenario: Isolated node

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Others

• Errors for resource groups

  • How long are logs and instances retained?

  • Why can't I run big data computations on scheduling resource groups?

• Others How do I set task priority?