diff options
Diffstat (limited to 'ndb/src/kernel/blocks/dbtup/Notes.txt')
| -rw-r--r-- | ndb/src/kernel/blocks/dbtup/Notes.txt | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/ndb/src/kernel/blocks/dbtup/Notes.txt b/ndb/src/kernel/blocks/dbtup/Notes.txt index 9d47c591fe8..c2973bb0a76 100644 --- a/ndb/src/kernel/blocks/dbtup/Notes.txt +++ b/ndb/src/kernel/blocks/dbtup/Notes.txt @@ -135,6 +135,24 @@ abort DELETE none - 1) alternatively, store prevTupVersion in operation record. +Abort from ordered index error +------------------------------ + +Obviously, index update failure causes operation failure. +The operation is then aborted later by TC. + +The problem here is with multiple indexes. Some may have been +updated successfully before the one that failed. Therefore +the trigger code aborts the successful ones already in +the prepare phase. + +In other words, multiple indexes are treated as one. + +Abort from any cause +-------------------- + +[ hairy stuff ] + Read attributes, query status ----------------------------- @@ -170,14 +188,11 @@ used to decide if the scan can see the tuple. This signal may also be called during any phase since commit/abort of all operations is not done in one time-slice. -Commit and abort ----------------- - -[ hairy stuff ] - Problems -------- Current abort code can destroy a tuple version too early. This happens in test case "ticuur" (insert-commit-update-update-rollback), if abort of first update arrives before abort of second update. + +vim: set textwidth=68: |