Re:Elasticsearch node crashes can cause data loss
by growse on Saturday May 02, 2015 @05:27AM
(#9476449)
I think the client assumes the data is written after $dfs.namenode.replication.min blocks have been written, which I think is 1 by default.
What it actually means inside HDFS when it claims 'written', I'm not sure - I'd assume flushed to the dirty page buffer at a minimum and would hope fsync.
What it actually means inside HDFS when it claims 'written', I'm not sure - I'd assume flushed to the dirty page buffer at a minimum and would hope fsync.