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James Taylor updated PHOENIX-4053: ---------------------------------- Attachment: PHOENIX-4053_v7.patch Attaching final patch. Thanks for the reviews, [~apurtell] & [~samarthjain]. > Lock row exclusively when necessary for mutable secondary indexing > ------------------------------------------------------------------ > > Key: PHOENIX-4053 > URL: https://issues.apache.org/jira/browse/PHOENIX-4053 > Project: Phoenix > Issue Type: Bug > Reporter: James Taylor > Assignee: James Taylor > Attachments: PHOENIX-4053_4.x-HBase-0.98_v2.patch, > PHOENIX-4053_4.x-HBase-0.98_v3.patch, PHOENIX-4053-4.x-HBase-0.98_v4.patch, > PHOENIX-4053-4.x-HBase-0.98_v6.patch, PHOENIX-4053_v2.patch, > PHOENIX-4053_v3.patch, PHOENIX-4053_v4.patch, PHOENIX-4053_v5.patch, > PHOENIX-4053_v6.patch, PHOENIX-4053_v7.patch, PHOENIX-4053_wip.patch > > > From HBase 1.2 on, rows are not exclusively locked when the preBatchMutate > call is made (see HBASE-18474). The mutable secondary index (global and > local) depend on this to get a consistent snapshot of a row between the point > when the current row value is looked up, and when the new row is written, > until the mvcc is advanced. Otherwise, a subsequent update to a row may not > see the current row state. Even with pre HBase 1.2 releases, the lock isn't > held long enough for us. We need to hold the locks from the start of the > preBatchMutate (when we read the data table to get the prior row values) > until the mvcc is advanced (beginning of postBatchMutateIndispensably). > Given the above, it's best if Phoenix manages the row locking itself > (mimicing the current HBase mechanism). -- This message was sent by Atlassian JIRA (v6.4.14#64029)