stevenzwu commented on code in PR #6764:
URL: https://github.com/apache/iceberg/pull/6764#discussion_r1100291622
##########
flink/v1.16/flink/src/main/java/org/apache/iceberg/flink/sink/IcebergFilesCommitterMetrics.java:
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@@ -54,12 +60,38 @@ void commitDuration(long commitDurationMs) {
lastCommitDurationMs.set(commitDurationMs);
}
+ /** This is called upon a successful commit. */
void updateCommitSummary(CommitSummary stats) {
+ elapsedSecondsSinceLastSuccessfulCommit.refreshLastRecordedTime();
committedDataFilesCount.inc(stats.dataFilesCount());
committedDataFilesRecordCount.inc(stats.dataFilesRecordCount());
committedDataFilesByteCount.inc(stats.dataFilesByteCount());
committedDeleteFilesCount.inc(stats.deleteFilesCount());
committedDeleteFilesRecordCount.inc(stats.deleteFilesRecordCount());
committedDeleteFilesByteCount.inc(stats.deleteFilesByteCount());
}
+
+ /**
+ * This gauge measures the elapsed time between now and last recorded time
+ * set by {@link ElapsedTimeGauge#refreshLastRecordedTime()}.
+ */
+ private static class ElapsedTimeGauge implements Gauge<Long> {
+ private final TimeUnit reportUnit;
+ private volatile long lastRecordedTimeNano;
+
+ ElapsedTimeGauge(TimeUnit timeUnit) {
+ this.reportUnit = timeUnit;
+ this.lastRecordedTimeNano = System.nanoTime();
+ }
+
+ void refreshLastRecordedTime() {
Review Comment:
@pvary I renamed this method from `refreshLastSuccessfulCommitTime` to
`refreshLastRecordedTime`, as the class `ElapsedTimeGauge` was intended as a
more general gauge.
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