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lmdb: ITS#8156 Fix MDB_MAXKEYSIZE doc.
Change-Id: Ia9dae2e68f28dcb715ac34226b358212317199c2
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@ -18,6 +18,7 @@ LMDB 0.9.15 Release Engineering
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Misc. Android/Windows cleanup
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Documentation
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Fix MDB_APPEND doc
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Fix MDB_MAXKEYSIZE doc (ITS#8156)
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Clarify mdb_dbi_open doc
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LMDB 0.9.14 Release (2014/09/20)
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15
mdb.c
15
mdb.c
@ -378,12 +378,17 @@ typedef MDB_ID txnid_t;
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/** The version number for a database's lockfile format. */
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#define MDB_LOCK_VERSION ((MDB_DEVEL) ? 999 : 1)
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/** @brief The max size of a key we can write, or 0 for dynamic max.
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/** @brief The max size of a key we can write, or 0 for computed max.
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*
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* Define this as 0 to compute the max from the page size. 511
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* is default for backwards compat: liblmdb <= 0.9.10 can break
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* when modifying a DB with keys/dupsort data bigger than its max.
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* #MDB_DEVEL sets the default to 0.
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* This macro should normally be left alone or set to 0.
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* Note that a database with big keys or dupsort data cannot be
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* reliably modified by a liblmdb which uses a smaller max.
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* The default is 511 for backwards compat, or 0 when #MDB_DEVEL.
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*
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* Other values are allowed, for backwards compat. However:
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* A value bigger than the computed max can break if you do not
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* know what you are doing, and liblmdb <= 0.9.10 can break when
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* modifying a DB with keys/dupsort data bigger than its max.
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*
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* Data items in an #MDB_DUPSORT database are also limited to
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* this size, since they're actually keys of a sub-DB. Keys and
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