Issue Details (XML | Word | Printable)

Key: DOC-123
Type: New Feature New Feature
Status: Open Open
Priority: Major Major
Assignee: Paul Vinkenoog
Reporter: Arioch
Votes: 0
Watchers: 0
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Documentation

Housekeeping article - mention BLOBs and their handles

Created: 18/Apr/16 01:40 PM   Updated: 18/Apr/16 01:40 PM
Component/s: None
Affects Version/s: None
Fix Version/s: None


 Description  « Hide
BLOBs are somewhat special case, they are kept outside the row and are handled somewhat differenlty.

More so, there is such a phenomenon as leaking BLOB IDs/handles by read-only read-committed never-ending transaction.
Such a transaction would not prevent regular table rows from being deleted->freed->collected but it may retain BLOBs for indefinite time.

http://www.firebirdsql.org/manual/gfix-housekeeping.html

I wish this article could make an *explicit* statement whether for that very context of GC and sweeping BLOBs are acting exactly like the rows referencing them or may have slightly different behavior in some situations.

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