prashantwason commented on a change in pull request #3590:
URL: https://github.com/apache/hudi/pull/3590#discussion_r758755681
##########
File path:
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/table/HoodieTimelineArchiveLog.java
##########
@@ -200,20 +200,19 @@ public boolean archiveIfRequired(HoodieEngineContext
context) throws IOException
.collect(Collectors.groupingBy(i -> Pair.of(i.getTimestamp(),
HoodieInstant.getComparableAction(i.getAction()))));
- // If metadata table is enabled, do not archive instants which are more
recent that the latest synced
- // instant on the metadata table. This is required for metadata table sync.
+ // If metadata table is enabled, do not archive instants which are more
recent that the last compaction on the
+ // metadata table.
if (config.isMetadataTableEnabled()) {
try (HoodieTableMetadata tableMetadata =
HoodieTableMetadata.create(table.getContext(), config.getMetadataConfig(),
config.getBasePath(),
FileSystemViewStorageConfig.SPILLABLE_DIR.defaultValue())) {
- Option<String> lastSyncedInstantTime = tableMetadata.getUpdateTime();
-
- if (lastSyncedInstantTime.isPresent()) {
- LOG.info("Limiting archiving of instants to last synced instant on
metadata table at " + lastSyncedInstantTime.get());
- instants = instants.filter(i ->
HoodieTimeline.compareTimestamps(i.getTimestamp(), HoodieTimeline.LESSER_THAN,
- lastSyncedInstantTime.get()));
- } else {
- LOG.info("Not archiving as there is no instants yet on the metadata
table");
+ Option<String> latestCompactionTime =
tableMetadata.getLatestCompactionTime();
Review comment:
@vinishjail97 This is required for proper functioning of the metadata
table. Until a compaction occurs on the metadata table, any instants on the
dataset cannot be archived.
Every action on the dataset (COMMIT, CLEAN, ROLLBACK, etc) will write to the
metadata table and create a deltacommit on the metadata table. Currently,
[after every 10 actions on the dataset
](https://github.com/apache/hudi/blob/master/hudi-common/src/main/java/org/apache/hudi/common/config/HoodieMetadataConfig.java#L75)
the metadata table is compacted. You can lower this but will cause greater IO
to compact the metadata table again and again.
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