danny0405 commented on code in PR #7561:
URL: https://github.com/apache/hudi/pull/7561#discussion_r1058040290
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hudi-common/src/main/java/org/apache/hudi/common/table/HoodieTableMetaClient.java:
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@@ -385,21 +386,44 @@ public HoodieMetastoreConfig getMetastoreConfig() {
}
/**
- * Returns fresh new archived commits as a timeline from startTs (inclusive).
- *
- * <p>This is costly operation if really early endTs is specified.
- * Be caution to use this only when the time range is short.
- *
- * <p>This method is not thread safe.
+ * Returns the cached archived timeline from startTs (inclusive).
*
- * @return Archived commit timeline
+ * @param startTs The start instant time (inclusive) of the archived
timeline.
+ * @return the archived timeline.
*/
public HoodieArchivedTimeline getArchivedTimeline(String startTs) {
- return new HoodieArchivedTimeline(this, startTs);
+ return getArchivedTimeline(startTs, true);
+ }
+
+ /**
+ * Returns the cached archived timeline if using in-memory cache or a fresh
new archived
+ * timeline if not using cache, from startTs (inclusive).
+ * <p>
+ * Instantiating an archived timeline is costly operation if really early
startTs is
+ * specified.
+ * <p>
+ * This method is not thread safe.
+ *
+ * @param startTs The start instant time (inclusive) of the archived
timeline.
+ * @param useCache Whether to use in-memory cache.
+ * @return the archived timeline based on the arguments.
+ */
+ public HoodieArchivedTimeline getArchivedTimeline(String startTs, boolean
useCache) {
+ if (useCache) {
+ return archivedTimelineMap.computeIfAbsent(startTs,
this::instantiateArchivedTimeline);
Review Comment:
When the cache is cleared ?
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