dengzhhu653 commented on code in PR #5688:
URL: https://github.com/apache/hive/pull/5688#discussion_r1986767316
##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java:
##########
@@ -11546,66 +11546,64 @@ private void cleanOlderEvents(int olderThan, Class
table, String tableName) {
} while (batchCount > 0);
}
- final long finish = System.nanoTime();
+ final long finish = System.currentTimeMillis();
LOG.info("Deleted {} {} events older than epoch:{} in {}ms", deleteCount,
tableName, tooOld,
- TimeUnit.NANOSECONDS.toMillis(finish - start));
+ finish - start);
}
private <T> int doCleanNotificationEvents(final int ageSec, final
Optional<Integer> batchSize, Class<T> tableClass, String tableName) {
+ String key;
+ if (MNotificationLog.class.equals(tableClass)) {
+ key = "eventId";
+ } else if (MTxnWriteNotificationLog.class.equals(tableClass)) {
+ key = "txnId";
+ } else {
+ throw new RuntimeException("Cleaning of older " + tableName + " events
failed. " +
+ "Reason: Unknown table encountered " + tableClass.getName());
+ }
final Transaction tx = pm.currentTransaction();
int eventsCount = 0;
try {
- String key = null;
tx.begin();
- try (Query query = pm.newQuery(tableClass, "eventTime <= tooOld")) {
+ try (Query query = pm.newQuery(String.format(
+ "select %s, eventTime from %s where eventTime <= tooOld order by %s",
Review Comment:
can we try `select min(%s), max(%s), min(eventTime), max(eventTime) ... `
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