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Try to GET object from container of previous epoch #234
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After discussion with @realloc we decided to define request meta headers with reserved keys:
This approach requires significant changes (everywhere starting from the API) and non-trivial testing, so we decided to move the solution of this task to the post-Yeouido sprints. |
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Add GetNetMapByEpoch method. Add Epoch method. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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… in read ops Support processing of NetmapEpoch and NetmapLookupDepth X-headers when processing object read operations. Placement for operations Get/Head/GetRange/GetRangeHash/Search is built for the epoch specified in NetmapEpoch X-header (by default latest). Also the specified operations are processed until success is achieved for network maps from the past up to NetmapLookupDepth value. Behavior for default values (zero or missing) left unchanged. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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… in read ops Support processing of NetmapEpoch and NetmapLookupDepth X-headers when processing object read operations. Placement for operations Get/Head/GetRange/GetRangeHash/Search is built for the epoch specified in NetmapEpoch X-header (by default latest). Also the specified operations are processed until success is achieved for network maps from the past up to NetmapLookupDepth value. Behavior for default values (zero or missing) left unchanged. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
cthulhu-rider
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Jan 12, 2021
Add GetNetMapByEpoch method. Add Epoch method. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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… in read ops Support processing of NetmapEpoch and NetmapLookupDepth X-headers when processing object read operations. Placement for operations Get/Head/GetRange/GetRangeHash/Search is built for the epoch specified in NetmapEpoch X-header (by default latest). Also the specified operations are processed until success is achieved for network maps from the past up to NetmapLookupDepth value. Behavior for default values (zero or missing) left unchanged. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
cthulhu-rider
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Jan 12, 2021
… in read ops Support processing of NetmapEpoch and NetmapLookupDepth X-headers when processing object read operations. Placement for operations Get/Head/GetRange/GetRangeHash/Search is built for the epoch specified in NetmapEpoch X-header (by default latest). Also the specified operations are processed until success is achieved for network maps from the past up to NetmapLookupDepth value. Behavior for default values (zero or missing) left unchanged. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
Done in #305 |
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Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
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Some objects can migrate after the epoch upgrade. We need to try to GET object from the container of previous epoch (may be several).
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