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| learn:bigdata:secondary_name_node [2014/08/07 16:41] – created yehuda | learn:bigdata:secondary_name_node [2022/01/03 16:03] (current) – external edit 127.0.0.1 | ||
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| ====== Secondary name node ====== | ====== Secondary name node ====== | ||
| - | " | + | See [[Name node]]. |
| + | |||
| + | **NOT HIGH AVAILBILITY** :!: | ||
| + | ===== Uses ===== | ||
| + | * " | ||
| + | * Resopnsibole of keeping less dataloss if the [[Name node]] is failed | ||
| + | |||
| + | |||
| + | ===== How it works ===== | ||
| + | * Structure | ||
| + | * fsImage | ||
| + | * Edit Logs | ||
| + | * Every hour copy [[Edit log]] and [[fsImage]] from [[Name node]] | ||
| + | * If [[Name node]] failed - marges [[fsImage]] with [[Edit log]] of [[Secondary | ||
