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<chapter id="GiST">
<para>
The current implementation of <acronym>GiST</acronym> within
<productname>PostgreSQL</productname> has some major limitations:
- <acronym>GiST</acronym> access is not concurrent; the
+ <acronym>GiST</acronym> index access is not concurrent, and the
<acronym>GiST</acronym> interface doesn't allow the development of certain
- data types, such as digital trees (see papers by Aoki et al); and there
- is not yet any support for write-ahead logging of updates in
- <acronym>GiST</acronym> indexes.
+ data types, such as digital trees (see papers by Aoki et al).
</para>
<para>
<productname>PostgreSQL</productname> implementation.
</para>
- <para>
- The lack of write-ahead logging is just a small matter of programming,
- but since it isn't done yet, a crash could render a <acronym>GiST</acronym>
- index inconsistent, forcing a <command>REINDEX</command>.
- </para>
-
</sect1>
<sect1 id="examples">