fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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Sergei Petrunia c9878baa87 Fix an assertion failure in range locking, locktree code. (#7938) ... Summary: Fix this scenario: trx1> acquire shared lock on $key trx2> acquire shared lock on the same $key trx1> attempt to acquire a unique lock on $key. Lock acquisition will fail, and deadlock detection will start. It will call iterate_and_get_overlapping_row_locks() which will produce a list with two locks (shared locks by trx1 and trx2). However the code in lock_request::build_wait_graph() was not prepared to find the lock by the same transaction in the list of conflicting locks. Fix it to ignore it. (One may suggest to fix iterate_and_get_overlapping_row_locks() to not include locks by trx1. This is not a good idea, because that function is also used to report all locks currently held) Pull Request resolved: https://github.com/facebook/rocksdb/pull/7938 Reviewed By: zhichao-cao Differential Revision: D26529374 Pulled By: ajkr fbshipit-source-id: d89cbed008db1a97a8f2351b9bfb75310750d16a		4 years ago
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point	Range Locking: Implementation of range locking (#7506)	4 years ago
range	Fix an assertion failure in range locking, locktree code. (#7938)	4 years ago
lock_manager.cc	Range Locking: Allow different LockManagers, add Range Lock definitions (#7443)	4 years ago
lock_manager.h	Range Locking: Allow different LockManagers, add Range Lock definitions (#7443)	4 years ago
lock_tracker.h	Range Locking: Allow different LockManagers, add Range Lock definitions (#7443)	4 years ago