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The "FAQ" page has been changed by QwertyManiac: http://wiki.apache.org/hadoop/FAQ?action=diff&rev1=99&rev2=100 == Does the name-node stay in safe mode till all under-replicated files are fully replicated? == No. During safe mode replication of blocks is prohibited. The name-node awaits when all or majority of data-nodes report their blocks. - Depending on how safe mode parameters are configured the name-node will stay in safe mode until a specific percentage of blocks of the system is ''minimally'' replicated [[http://hadoop.apache.org/core/docs/current/hadoop-default.html#dfs.replication.min|dfs.replication.min]]. If the safe mode threshold [[http://hadoop.apache.org/core/docs/current/hadoop-default.html#dfs.safemode.threshold.pct|dfs.safemode.threshold.pct]] is set to 1 then all blocks of all files should be minimally replicated. + Depending on how safe mode parameters are configured the name-node will stay in safe mode until a specific percentage of blocks of the system is ''minimally'' replicated [[http://hadoop.apache.org/core/docs/current/hdfs-default.html#dfs.replication.min|dfs.replication.min]]. If the safe mode threshold [[http://hadoop.apache.org/core/docs/current/hdfs-default.html#dfs.safemode.threshold.pct|dfs.safemode.threshold.pct]] is set to 1 then all blocks of all files should be minimally replicated. Minimal replication does not mean full replication. Some replicas may be missing and in order to replicate them the name-node needs to leave safe mode.
