Retention policy error

Hi there,
There are some 'retention policy' errors. Can someone tell me what is wrong? Especially the third/forth step?

Thank you very much.

Steps to reproduce:
List the minimal actions needed to reproduce the behavior.
1, setup InfluxDB version 2.7.1 on cloud VM;
2, setup a Java Spring program with Influxdb-client-java version 6.9.0;
3, setup the Bucket retention policy to 7 days;
4, the _time of Point is three hours ahead of UTC;
5, run this program for at last a week, there are some 'retention policy' errors.

Client Version:
Influxdb-client-java 6.9.0
InfluxDB Version: 2.7.1
JDK Version: JDK 8
Platform: Linux

Expected behavior:
There are no 'retention policy' errors.

error logs:

2023-07-03 05:24:04,262 ERROR [RxNewThreadScheduler-1] com.influxdb.client.write.events.WriteErrorEvent: The error occurred during writing of data
com.influxdb.exceptions.UnprocessableEntityException: HTTP status code: 422; Message: failure writing points to database: partial write: points beyond retention policy dropped=1
        at com.influxdb.internal.AbstractRestClient.responseToError(AbstractRestClient.java:133)
        at com.influxdb.internal.AbstractRestClient.toInfluxException(AbstractRestClient.java:99)
        at com.influxdb.client.internal.AbstractWriteClient.lambda$new$8(AbstractWriteClient.java:174)
        at io.reactivex.rxjava3.internal.subscribers.LambdaSubscriber.onNext(LambdaSubscriber.java:65)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableDoFinally$DoFinallySubscriber.onNext(FlowableDoFinally.java:85)
        at io.reactivex.rxjava3.internal.operators.mixed.FlowableConcatMapMaybe$ConcatMapMaybeSubscriber.drain(FlowableConcatMapMaybe.java:238)
        at io.reactivex.rxjava3.internal.operators.mixed.ConcatMapXMainSubscriber.onNext(ConcatMapXMainSubscriber.java:106)
        at com.influxdb.client.internal.flowable.BackpressureBatchesBufferStrategy$OnBackpressureBufferStrategySubscriber.drain(BackpressureBatchesBufferStrategy.java:238)
        at com.influxdb.client.internal.flowable.BackpressureBatchesBufferStrategy$OnBackpressureBufferStrategySubscriber.onNext(BackpressureBatchesBufferStrategy.java:149)
        at com.influxdb.client.internal.flowable.BackpressureBatchesBufferStrategy$OnBackpressureBufferStrategySubscriber.onNext(BackpressureBatchesBufferStrategy.java:54)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFlatMap$MergeSubscriber.tryEmitScalar(FlowableFlatMap.java:232)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFlatMap$MergeSubscriber.onNext(FlowableFlatMap.java:150)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFilter$FilterSubscriber.tryOnNext(FlowableFilter.java:75)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFilter$FilterSubscriber.onNext(FlowableFilter.java:53)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFlatMap$MergeSubscriber.tryEmit(FlowableFlatMap.java:270)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableFlatMap$InnerSubscriber.onNext(FlowableFlatMap.java:627)
        at io.reactivex.rxjava3.internal.operators.flowable.FlowableMap$MapSubscriber.onNext(FlowableMap.java:69)
        at io.reactivex.rxjava3.subscribers.SerializedSubscriber.onNext(SerializedSubscriber.java:103)
        at com.influxdb.client.internal.flowable.FlowableBufferTimedFlushable$BufferExactBoundedSubscriber.accept(FlowableBufferTimedFlushable.java:227)
        at com.influxdb.client.internal.flowable.FlowableBufferTimedFlushable$BufferExactBoundedSubscriber.accept(FlowableBufferTimedFlushable.java:85)
        at io.reactivex.rxjava3.internal.subscribers.QueueDrainSubscriber.fastPathOrderedEmitMax(QueueDrainSubscriber.java:107)
        at com.influxdb.client.internal.flowable.FlowableBufferTimedFlushable$BufferExactBoundedSubscriber.run(FlowableBufferTimedFlushable.java:281)
        at io.reactivex.rxjava3.core.Scheduler$Worker$PeriodicTask.run(Scheduler.java:543)
        at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.run(ScheduledRunnable.java:65)
        at io.reactivex.rxjava3.internal.schedulers.ScheduledRunnable.call(ScheduledRunnable.java:56)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:750)

Inizia riproducendo il report con InfluxDB 2.7.1, influxdb-client-java 6.9.0, JDK 8 e una policy di retention del bucket di sette giorni. Confronta i timestamp dei point con UTC e analizza l’errore relativo alla retention policy della configurazione Java fornita. Il lavoro è completato quando viene identificato se il timestamp o la configurazione di retention causa il rifiuto dei point e viene documentata la correzione confermata.