Common issues

How data backfilling works

Why parallelism fails for hourly and minute nodes

Why instances enter the Pending (Schedule) state

Why the "run time out of range" error?

Why are no backfill instances generated?

Why are instances waiting for resources?

Why does a task keep waiting for gateway scheduling resources?

Why does a Data Integration task keep showing a 'wait' status?

Key concept

Why does an instance perform a dry run?

1. Scenario 1: Dry run for weekly/monthly cycle

2. Scenario 2: Deprecated real-time generated instance

3. Scenario 3: Instance set as successful

4. Scenario 4: Instance property is set to dry run

5. Scenario 5: Unselected instance in temporary workflow

Troubleshooting daily node dry runs

Node run conditions

Reasons for delayed execution

Task not found in Operation Center

A periodic task generates no instances

Specific task generates no instances

Instances are generated but do not run

Prerequisites for a task to run

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

Why is a frozen auto triggered node run as scheduled?

Scenario 1: Node succeeds with an execution log

Scenario 2: Node succeeds without an execution log

General references

• A task configured to retry on failure does not retry after a run failure and reports Task Run Timed Out, Killed by System!!

• What do I do if the following error is reported for a node when the node is run: OSError: [Errno 7] Argument list too long?

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.

• What do I do if the message 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 appears?

• What do I do if the data synchronized by using multiple threads is out of order?

AnalyticDB for MySQL nodes

What do I do if my synchronization node that uses an AnalyticDB for MySQL data source and runs on a shared resource group fails to run?

Database nodes

When I run a data synchronization node that uses a MySQL data source, the system displays an error message indicating that the Java Database Connectivity (JDBC) driver for the MySQL node is not supported. What do I do?

General nodes

• How do I view the logs of a for-each node, do-while node, or PAI node in Operation Center?

• What do I do if the error message error in your condition run fail appears when I run a branch node?

• What do I do if the error message None Ftp connection info!! appears when I run an FTP Check node?

• What do I do if the error message Connect Failed appears when I run an FTP Check node?

• What do I do if the error message The current time has exceeded the end-check time point! appears when I run an FTP Check node?

• What do I do if the error message File not Exists or exceeded the end-check time point! appears when I run an FTP Check node?

Resource groups

Error: no available machine resources under the task resource group

Undeploy a node

Undeploy nodes

Verify successful undeployment

Restore an undeployed node

Scenario: Isolated nodes

Resource groups

• How long are logs for instances and the instances retained?

• Why cannot I perform big data computing on a resource group for scheduling?

Others

How do I adjust the priority of a node instance?