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Comment improve #2

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This commit is contained in:
Volodymyr Babak 2021-07-30 14:39:41 +03:00 committed by Andrew Shvayka
parent ee13f53eca
commit 7be8572364
1 changed files with 1 additions and 1 deletions
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dao/src/main/java/org/thingsboard/server/dao/timeseries/CassandraBaseTimeseriesDao.java
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@ -185,7 +185,7 @@ public class CassandraBaseTimeseriesDao extends AbstractCassandraBaseTimeseriesD
if (isFixedPartitioning()) { if (isFixedPartitioning()) {
return Futures.immediateFuture(null); return Futures.immediateFuture(null);
} }
// DO NOT apply custom to partition, otherwise, short TTL will remove partition too early // DO NOT apply custom TTL to partition, otherwise, short TTL will remove partition too early
// partitions must remain in the DB forever or be removed only by systemTtl // partitions must remain in the DB forever or be removed only by systemTtl
// removal of empty partition is too expensive (we need to scan all data keys for these partitions with ALLOW FILTERING) // removal of empty partition is too expensive (we need to scan all data keys for these partitions with ALLOW FILTERING)
long ttl = computeTtl(0); long ttl = computeTtl(0);