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mahesh kumar behera updated HIVE-19267: --------------------------------------- Attachment: HIVE-19267.17.patch > Create/Replicate ACID Write event > --------------------------------- > > Key: HIVE-19267 > URL: https://issues.apache.org/jira/browse/HIVE-19267 > Project: Hive > Issue Type: Sub-task > Components: repl, Transactions > Affects Versions: 3.0.0 > Reporter: mahesh kumar behera > Assignee: mahesh kumar behera > Priority: Major > Labels: ACID, DR, pull-request-available, replication > Attachments: HIVE-19267.01.patch, HIVE-19267.02.patch, > HIVE-19267.03.patch, HIVE-19267.04.patch, HIVE-19267.05.patch, > HIVE-19267.06.patch, HIVE-19267.07.patch, HIVE-19267.08.patch, > HIVE-19267.09.patch, HIVE-19267.10.patch, HIVE-19267.11.patch, > HIVE-19267.12.patch, HIVE-19267.13.patch, HIVE-19267.14.patch, > HIVE-19267.15.patch, HIVE-19267.16.patch, HIVE-19267.17.patch, > HIVE-19267.17.patch > > > > h1. Replicate ACID write Events > * Create new EVENT_WRITE event with related message format to log the write > operations with in a txn along with data associated. > * Log this event when perform any writes (insert into, insert overwrite, > load table, delete, update, merge, truncate) on table/partition. > * If a single MERGE/UPDATE/INSERT/DELETE statement operates on multiple > partitions, then need to log one event per partition. > * DbNotificationListener should log this type of event to special metastore > table named "MTxnWriteNotificationLog". > * This table should maintain a map of txn ID against list of > tables/partitions written by given txn. > * The entry for a given txn should be removed by the cleaner thread that > removes the expired events from EventNotificationTable. > h1. Replicate Commit Txn operation (with writes) > Add new EVENT_COMMIT_TXN to log the metadata/data of all tables/partitions > modified within the txn. > *Source warehouse:* > * This event should read the EVENT_WRITEs from "MTxnWriteNotificationLog" > metastore table to consolidate the list of tables/partitions modified within > this txn scope. > * Based on the list of tables/partitions modified and table Write ID, need > to compute the list of delta files added by this txn. > * Repl dump should read this message and dump the metadata and delta files > list. > *Target warehouse:* > * Ensure snapshot isolation at target for on-going read txns which shouldn't > view the data replicated from committed txn. (Ensured with open and allocate > write ID events). -- This message was sent by Atlassian JIRA (v7.6.3#76005)