aprochko opened a new issue, #39353: URL: https://github.com/apache/beam/issues/39353
### What happened? Hi, we have several dataflow jobs which are stucked after the start after updating to 2.75.0 The job is able to start, but is not able to process the records after specific step (it might be "Flatten.pCollections()", but not sure) There are no logs, only increased amount of messages likes INFO 2026-07-16T16:35:59.254244700Z [213.238s][info][gc,phases ] GC(120) Post Compact 2.382ms INFO 2026-07-16T16:35:59.254234010Z [213.235s][info][gc,phases,start] GC(120) Post Compact INFO 2026-07-16T16:35:59.254230210Z [213.235s][info][gc,phases ] GC(120) Compaction Phase 248.772ms INFO 2026-07-16T16:35:59.254226800Z [212.986s][info][gc,phases,start] GC(120) Compaction Phase INFO 2026-07-16T16:35:59.254223760Z [212.986s][info][gc,phases ] GC(120) Adjust Pointers 518.781ms INFO 2026-07-16T16:35:59.254220850Z [212.467s][info][gc,phases,start] GC(120) Adjust Pointers INFO 2026-07-16T16:35:59.254216840Z [212.467s][info][gc,phases ] GC(120) Forward 71.019ms INFO 2026-07-16T16:35:59.254213710Z [212.396s][info][gc,phases,start] GC(120) Forward INFO 2026-07-16T16:35:59.254191910Z [212.396s][info][gc,phases ] GC(120) Summary Phase 0.024ms INFO 2026-07-16T16:35:59.254188350Z [212.396s][info][gc,phases,start] GC(120) Summary Phase INFO 2026-07-16T16:35:59.254183520Z [212.396s][info][gc,phases ] GC(120) Marking Phase 945.528ms INFO 2026-07-16T16:35:59.254179840Z [211.451s][info][gc,phases,start] GC(120) Marking Phase INFO 2026-07-16T16:35:59.254177050Z [211.451s][info][gc,start ] GC(120) Pause Full (Allocation Failure) INFO 2026-07-16T16:35:59.254174130Z [211.231s][info][gc,cpu ] GC(119) User=3.41s Sys=0.01s Real=1.75s INFO 2026-07-16T16:35:59.254171130Z [211.231s][info][gc ] GC(119) Pause Full (Allocation Failure) 1777M->1512M(2121M) 1750.276ms INFO 2026-07-16T16:35:59.254168630Z [211.231s][info][gc,metaspace ] GC(119) Metaspace: 108557K(109504K)->108557K(109504K) NonClass: 98747K(99200K)->98747K(99200K) Class: 9810K(10304K)->9810K(10304K) INFO 2026-07-16T16:35:59.254165700Z [211.231s][info][gc,heap ] GC(119) ParOldGen: 1549115K(1629184K)->1549047K(1629184K) INFO 2026-07-16T16:35:59.254162980Z [211.231s][info][gc,heap ] GC(119) PSYoungGen: 271360K(542720K)->0K(542720K) Eden: 271360K(271360K)->0K(271360K) From: 0K(271360K)->0K(271360K) INFO 2026-07-16T16:35:59.254160200Z [211.231s][info][gc,phases ] GC(119) Post Compact 2.306ms INFO 2026-07-16T16:35:59.254156890Z [211.228s][info][gc,phases,start] GC(119) Post Compact INFO 2026-07-16T16:35:59.254153680Z [211.228s][info][gc,phases ] GC(119) Compaction Phase 236.062ms INFO 2026-07-16T16:35:59.254147580Z [210.992s][info][gc,phases,start] GC(119) Compaction Phase INFO 2026-07-16T16:35:59.251831950Z [210.992s][info][gc,phases ] GC(119) Adjust Pointers 519.856ms INFO 2026-07-16T16:35:59.251829300Z [210.472s][info][gc,phases,start] GC(119) Adjust Pointers INFO 2026-07-16T16:35:59.251826350Z [210.472s][info][gc,phases ] GC(119) Forward 63.422ms Does anyone else have such an issues? We have them in 3 / 10 jobs. ### Issue Priority Priority: 2 (default / most bugs should be filed as P2) ### Issue Components - [ ] Component: Python SDK - [x] Component: Java SDK - [ ] Component: Go SDK - [ ] Component: Typescript SDK - [ ] Component: IO connector - [ ] Component: Beam YAML - [ ] Component: Beam examples - [ ] Component: Beam playground - [ ] Component: Beam katas - [ ] Component: Website - [ ] Component: Infrastructure - [ ] Component: Spark Runner - [ ] Component: Flink Runner - [ ] Component: Prism Runner - [ ] Component: Twister2 Runner - [ ] Component: Hazelcast Jet Runner - [ ] Component: Google Cloud Dataflow Runner -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
