dybyte opened a new pull request, #9815:
URL: https://github.com/apache/seatunnel/pull/9815
### Purpose of this pull request
I observed that the `testRestoreTaskWhenBinlogDelete` test in
`MysqlCDCWithBinlogDeleteIT` occasionally fails in CI.
```
ERROR org.apache.seatunnel.engine.server.rest.filter.ExceptionHandlingFilter
- Error occurred while processing request
2025-09-03T06:28:36.6933917Z java.lang.NullPointerException: null
2025-09-03T06:28:36.6934361Z at
org.apache.seatunnel.engine.server.rest.service.BaseService.getJobStartTime(BaseService.java:213)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6934783Z at
org.apache.seatunnel.engine.server.rest.service.BaseService.convertToJson(BaseService.java:184)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6935241Z at
org.apache.seatunnel.engine.server.rest.service.JobInfoService.getJobInfoJson(JobInfoService.java:69)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6935650Z at
org.apache.seatunnel.engine.server.rest.servlet.JobInfoServlet.doGet(JobInfoServlet.java:52)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6935976Z at
javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
~[seatunnel-hadoop3-3.1.4-uber.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6936290Z at
javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
~[seatunnel-hadoop3-3.1.4-uber.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6936803Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6937284Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6937783Z at
org.apache.seatunnel.engine.server.rest.filter.ExceptionHandlingFilter.doFilter(ExceptionHandlingFilter.java:50)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6938211Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6938669Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6939175Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6939653Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6940124Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6940656Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6941136Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6941665Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6942104Z at
org.apache.seatunnel.shade.org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6942577Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6943041Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6943746Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6944211Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6944679Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6945048Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.Server.handle(Server.java:516)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6945477Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6945894Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6946303Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6946750Z at
org.apache.seatunnel.shade.org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6947254Z at
org.apache.seatunnel.shade.org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6947731Z at
org.apache.seatunnel.shade.org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6948137Z at
org.apache.seatunnel.shade.org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6948635Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:338)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6949136Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:315)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6949648Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:173)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6950183Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:131)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6950748Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:409)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6951220Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6951742Z at
org.apache.seatunnel.shade.org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
~[seatunnel-starter.jar:2.3.12-SNAPSHOT]
2025-09-03T06:28:36.6951874Z at
java.lang.Thread.run(Thread.java:750) [?:1.8.0_342]
```
This failure is caused by a NullPointerException in the `getJobStartTime`
method of `BaseService`.
This PR fixes the NPE in `getJobStartTime`, which eliminates the flakiness
of the `testRestoreTaskWhenBinlogDelete` test.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Covered by existing test
### Check list
* [ ] If any new Jar binary package adding in your PR, please add License
Notice according
[New License
Guide](https://github.com/apache/seatunnel/blob/dev/docs/en/contribution/new-license.md)
* [ ] If necessary, please update the documentation to describe the new
feature. https://github.com/apache/seatunnel/tree/dev/docs
* [ ] If you are contributing the connector code, please check that the
following files are updated:
1. Update
[plugin-mapping.properties](https://github.com/apache/seatunnel/blob/dev/plugin-mapping.properties)
and add new connector information in it
2. Update the pom file of
[seatunnel-dist](https://github.com/apache/seatunnel/blob/dev/seatunnel-dist/pom.xml)
3. Add ci label in
[label-scope-conf](https://github.com/apache/seatunnel/blob/dev/.github/workflows/labeler/label-scope-conf.yml)
4. Add e2e testcase in
[seatunnel-e2e](https://github.com/apache/seatunnel/tree/dev/seatunnel-e2e/seatunnel-connector-v2-e2e/)
5. Update connector
[plugin_config](https://github.com/apache/seatunnel/blob/dev/config/plugin_config)
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