> On Feb 23, 2015, at 1:47 AM, Arinto Murdopo <[email protected]> wrote: > > We're running HBase (0.94.15-cdh4.6.0) on top of HDFS (Hadoop > 2.0.0-cdh4.6.0). > For all of our tables, we set the replication factor to 1 (dfs.replication > = 1 in hbase-site.xml). We set to 1 because we want to minimize the HDFS > usage (now we realize we should set this value to at least 2, because > "failure is a norm" in distributed systems).
Sorry, but you really want this to be a replication value of at least 3 and not 2. Suppose you have corruption but not a lost block. Which copy of the two is right? With 3, you can compare the three and hopefully 2 of the 3 will match.
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