public NNStorageRetentionManager(Configuration conf, NNStorage storage, LogsPurgeable
purgeableLogs, NNStorageRetentionManager.StoragePurger purger)
{
this.numCheckpointsToRetain = conf.GetInt(DFSConfigKeys.DfsNamenodeNumCheckpointsRetainedKey
, DFSConfigKeys.DfsNamenodeNumCheckpointsRetainedDefault);
this.numExtraEditsToRetain = conf.GetLong(DFSConfigKeys.DfsNamenodeNumExtraEditsRetainedKey
, DFSConfigKeys.DfsNamenodeNumExtraEditsRetainedDefault);
this.maxExtraEditsSegmentsToRetain = conf.GetInt(DFSConfigKeys.DfsNamenodeMaxExtraEditsSegmentsRetainedKey
, DFSConfigKeys.DfsNamenodeMaxExtraEditsSegmentsRetainedDefault);
Preconditions.CheckArgument(numCheckpointsToRetain > 0, "Must retain at least one checkpoint"
);
Preconditions.CheckArgument(numExtraEditsToRetain >= 0, DFSConfigKeys.DfsNamenodeNumExtraEditsRetainedKey
+ " must not be negative");
this.storage = storage;
this.purgeableLogs = purgeableLogs;
this.purger = purger;
}
public NNStorageRetentionManager(Configuration conf, NNStorage storage, LogsPurgeable
purgeableLogs)
: this(conf, storage, purgeableLogs, new NNStorageRetentionManager.DeletionStoragePurger
())
{
}
