pingsutw
2018-11-27 13:02:02 UTC
Hi:
On the apache Hadoop doc,that says Lasy_Persist policy is useful only for single replica blocks.
Lasy_Persist is for set for ram disk
My question is (1)when memory is full,would blocks write to the disks? (2)when cluster unfortunately shot down, it means my data gone?
åŸ Windows 10 çéµä»¶å³é
On the apache Hadoop doc,that says Lasy_Persist policy is useful only for single replica blocks.
Lasy_Persist is for set for ram disk
My question is (1)when memory is full,would blocks write to the disks? (2)when cluster unfortunately shot down, it means my data gone?
åŸ Windows 10 çéµä»¶å³é