There's a build error after the following fix was integrated:

JDK-8283289 JFR: Rename CheckPoint

[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:38: error: class CheckpointEvent is public, should be declared in a file named CheckpointEvent.java
[2022-03-18T13:38:16,118Z] public final class CheckpointEvent {
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:40: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] private final LinkedHashMap<Long, CheckpointPool> pools = new LinkedHashMap<>();
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:67: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] public Collection<CheckpointPool> getPools() {
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/ChunkWriter.java:208: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] for (CheckpointPool pool : event.getPools()) {
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:51: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] var cpp = pools.computeIfAbsent(typeId, k -> new CheckpointPool(typeId));
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:59: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] for (CheckpointPool cpp : pools.values()) {
[2022-03-18T13:38:16,118Z] ^
[2022-03-18T13:38:16,118Z] /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointEvent.java:77: warning: auxiliary class CheckpointPool in /opt/mach5/mesos/work_dir/slaves/ff806ead-2cac-495d-9cbc-62116f99bf14-S14150/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/ec09bf3d-e79d-4c7e-85bc-8e4866277bb7/runs/d8d8670b-0534-4468-a0e5-3f5c245e93ea/workspace/open/src/jdk.jfr/share/classes/jdk/jfr/internal/consumer/filter/CheckPointPool.java should not be accessed from outside its own source file
[2022-03-18T13:38:16,118Z] for (CheckpointPool p : pools.values()) {
[2022-03-18T13:38:16,119Z] ^
[2022-03-18T13:38:16,119Z] 1 error
[2022-03-18T13:38:16,119Z] 6 warnings