Locking item ranges for creating a secondary index from an online table
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United States of America Patent
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Jan 23, 2018
Issued Date -
N/A
app pub date -
Sep 18, 2015
filing date -
Sep 18, 2015
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status (Latency Note)
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Abstract
A data storage system may implement locking item ranges for creating a secondary index of an online table. A secondary index may be generated for a table of items stored in a non-relational data store. Different ranges of items in the data store may be locked while a corresponding portion of the secondary index is generated. Upon generating the corresponding portion of the secondary index, a range of items may be unlocked. While generating the secondary index, the table may be made available for servicing access requests. For a request to update the table received during the generation of the secondary index, a determination may be made as to whether the update is included within a locked range of the table. If locked, the request may be delayed until the range is unlocked.
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