mas-chen commented on code in PR #6764:
URL: https://github.com/apache/iceberg/pull/6764#discussion_r1099674674
##########
flink/v1.16/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitterMetrics.java:
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@@ -54,12 +60,34 @@ void commitDuration(long commitDurationMs) {
lastCommitDurationMs.set(commitDurationMs);
}
+ /** This is called upon a successful commit. */
void updateCommitSummary(CommitSummary stats) {
+ elapsedSecondsSinceLastSuccessfulCommit.refreshLastSuccessfulCommitTime();
committedDataFilesCount.inc(stats.dataFilesCount());
committedDataFilesRecordCount.inc(stats.dataFilesRecordCount());
committedDataFilesByteCount.inc(stats.dataFilesByteCount());
committedDeleteFilesCount.inc(stats.deleteFilesCount());
committedDeleteFilesRecordCount.inc(stats.deleteFilesRecordCount());
committedDeleteFilesByteCount.inc(stats.deleteFilesByteCount());
}
+
+ private static class ElapsedTimeGauge implements Gauge<Long> {
+ private final TimeUnit reportUnit;
+ private volatile long lastSuccessfulCommitTimeNano;
+
+ ElapsedTimeGauge(TimeUnit timeUnit) {
+ this.reportUnit = timeUnit;
+ this.lastSuccessfulCommitTimeNano = System.nanoTime();
+ }
+
+ void refreshLastSuccessfulCommitTime() {
+ this.lastSuccessfulCommitTimeNano = System.nanoTime();
+ }
+
+ @Override
+ public Long getValue() {
+ return reportUnit.convert(
Review Comment:
No, before the first checkpoint. `lastSuccessfulCommitTimeNano` would be 0
and the delta would be large
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