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diff --git a/lib/mnesia/doc/src/notes.xml b/lib/mnesia/doc/src/notes.xml new file mode 100644 index 0000000000..69f2185cd8 --- /dev/null +++ b/lib/mnesia/doc/src/notes.xml @@ -0,0 +1,383 @@ +<?xml version="1.0" encoding="latin1" ?> +<!DOCTYPE chapter SYSTEM "chapter.dtd"> + +<chapter> + <header> + <copyright> + <year>1996</year><year>2009</year> + <holder>Ericsson AB. All Rights Reserved.</holder> + </copyright> + <legalnotice> + The contents of this file are subject to the Erlang Public License, + Version 1.1, (the "License"); you may not use this file except in + compliance with the License. You should have received a copy of the + Erlang Public License along with this software. If not, it can be + retrieved online at http://www.erlang.org/. + + Software distributed under the License is distributed on an "AS IS" + basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See + the License for the specific language governing rights and limitations + under the License. + + </legalnotice> + + <title>Mnesia Release Notes</title> + <prepared>Dan Gudmundsson and Håkan Mattsson</prepared> + <responsible></responsible> + <docno></docno> + <approved></approved> + <checked></checked> + <date>05-01-26</date> + <rev>AE</rev> + <file>notes.xml</file> + </header> + <p>This document describes the changes made to the Mnesia system + from version to version. The intention of this document is to + list all incompatibilities as well as all enhancements and + bugfixes for every release of Mnesia. Each release of Mnesia + thus constitutes one section in this document. The title of each + section is the version number of Mnesia.</p> + + <section><title>Mnesia 4.4.12</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The documentation is now built with open source tools + (xsltproc and fop) that exists on most platforms. One + visible change is that the frames are removed.</p> + <p> + Own Id: OTP-8250</p> + </item> + </list> + </section> + + </section> + <section><title>Mnesia 4.4.11</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Fixed duplicate results with mnesia:index_read() on + ordered_set tables. Reported by Sam Bobroff. </p> + <p> + Fixed locking in mnesia:index_read() which now grabs a read + table lock to ensure correctness, this may slow down the + operation or block other processes trying to reach the + same table. </p> + <p> + Calling mnesia:dump_log() could crash mnesia, + Reported by Igor Ribeiro Sucupira.</p> + <p> Own Id: OTP-8074</p> + </item> + </list> + </section> + + </section> + <section><title>Mnesia 4.4.10</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Mnesia crashed if a qlc query was running inside a + transaction when mnesia stopped at another node. Thanks + Teemu Antti-Poika.</p> + <p> + Own Id: OTP-7968</p> + </item> + <item> + <p> + Mnesia could crash when loading local_content tables.</p> + <p> + Own Id: OTP-8002 Aux Id: seq11277 </p> + </item> + </list> + </section> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Minor (smp) optimizations.</p> + <p> + Own Id: OTP-7928</p> + </item> + </list> + </section> + + </section> + + + <section><title>Mnesia 4.4.9</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + mnesia:clear_table/1 crashed instead of returning + <c>{aborted,..}</c> if it was called inside a + transaction.</p> + <p> + Own Id: OTP-7911</p> + </item> + </list> + </section> + + </section> + + <section><title>Mnesia 4.4.8</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + With bad timing several api functions could return or + exit with a bad error message when mnesia was shutting + down.</p> + <p> + Own Id: OTP-7753 Aux Id: seq11179 </p> + </item> + <item> + <p> + <c>mnesia:clear_table/1</c> cleared all nodes table + content even if the table was <c>local_content</c> only + type.</p> + <p> + Own Id: OTP-7835</p> + </item> + </list> + </section> + + </section> + + <section><title>Mnesia 4.4.7</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Disallowed match patterns ('_', and '$n') as argument to + <c>mnesia:delete_object/1</c> and friends.</p> + <p> + Own Id: OTP-7524</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Introduced a few new functions in Mnesia: <c>mnesia:read/2</c>, + <c>mnesia:first/3</c>, <c>mnesia:last/3</c>, <c>mnesia:prev/4</c>, + <c>mnesia:next/4</c>, <c>mnesia_frag:first/1</c>, <c>mnesia_frag:last/1</c>, + <c>mnesia_frag:prev/2</c>, <c>mnesia_frag:next/2</c>.</p> + <p> + Own Id: OTP-7625</p> + </item> + </list> + </section> + +</section> + + <section><title>Mnesia 4.4.6</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + <c>mnesia:restore/2</c> aborted if a <c>EXIT</c> message + appeared in the client message queue.</p> + <p> + Own Id: OTP-7585 Aux Id: seq11046 </p> + </item> + </list> + </section> + </section> + + <section><title>Mnesia 4.4.5</title> + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + mnesia:clear_table/1 does not require that all + replicas of the table are available anymore.</p> + <p> + Own Id: OTP-7466 Aux Id: seq11015</p> + </item> + </list> + </section> + </section> + + <section><title>Mnesia 4.4.4</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Mnesia did not garbage collect transaction decisions on + disk based nodes if no transactions where made on the + local node.</p> + <p> + Own Id: OTP-7419</p> + </item> + </list> + </section> + + </section> + + <section><title>Mnesia 4.4.3</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Table referred to by foreign key did not have node_pool + properly cleaned up when a node was removed from the + schema. Thanks Paul Mineiro.</p> + <p> + Own Id: OTP-7340</p> + </item> + <item> + <p> + Mnesia crashed and generated a core dump if a + schema_transaction was running when mnesia stopped.</p> + <p> + Own Id: OTP-7378 Aux Id: seq10964 </p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + It is now possible to delete a db node even when other + disk resident nodes are down. Thanks Paul Mineiro.</p> + <p> + Own Id: OTP-7383</p> + </item> + </list> + </section> + +</section> + + <section><title>Mnesia 4.4.2</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Sticky locks could lead to hanging transactions.</p> + <p> + Own Id: OTP-7205 Aux Id: seq10793 </p> + </item> + <item> + <p> + <c>mnesia:snmp_get_next_index/2</c> didn't work with + partial index keys. Argument checking is now done + according to documentation, in functions + <c>mnesia:snmp_get_row/2</c>, + <c>mnesia:snmp_get_mnesia_key/2</c> and + <c>mnesia:snmp_get_next_index/2</c>. These functions now + require that <c>RowIndex</c> is a list.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-7208</p> + </item> + </list> + </section> + </section> + + <section><title>Mnesia 4.4.1</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Snmp index tables was not initialized correctly in + <c>mnesia-4.4</c>.</p> + <p> + Own Id: OTP-7170 Aux Id: seq10870 </p> + </item> + </list> + </section> + <section><title>Known Bugs and Problems</title> + <list> + <item> + <p> + Rearranging fragmented tables is an O(N^2) operation.</p> + <p> + Own Id: OTP-6300</p> + </item> + </list> + </section> + </section> + + <section><title>Mnesia 4.4</title> + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Mnesia ignored the module argument to + <c>mnesia:restore/2</c>. Thanks Paul Minerio.</p> + <p> + Own Id: OTP-6981</p> + </item> + </list> + </section> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Mnesia's snmp operations <c>snmp_get_row/2</c>, + <c>snmp_get_next_index/2</c> and + <c>snmp_get_mnesia_key/2</c> have been made context + aware, i.e. inside a transaction they will compensate for + table updates made in earlier in the same transaction. + This might cause a performance drop if a lot of updates + have been made before the invocation of these functions.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-6856 Aux Id: seq10671 </p> + </item> + <item> + <p> + Introduced erlang:phash/2 as new default for fragmented + tables. Already existing tables will continue to use + whatever hash function they where using.</p> + <p> + Own Id: OTP-6923</p> + </item> + <item> + <p> + Introduced <c>mnesia:is_transaction/0</c>.</p> + <p> + Own Id: OTP-6995 Aux Id: seq10812 </p> + </item> + </list> + </section> + + <section><title>Known Bugs and Problems</title> + <list> + <item> + <p> + Rearranging fragmented tables is an O(N^2) operation.</p> + <p> + Own Id: OTP-6300</p> + </item> + </list> + </section> + </section> + + <!-- section> + <title>Previous Notes</title> + <p>For information about older versions see <url href="part_notes_history_frame.html">release notes history</url>.</p> + </section --> +</chapter> + |