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2 | 2 |
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3 | 3 | <chapter id="wal"> |
4 | 4 | <title>Write-Ahead Logging (<acronym>WAL</acronym>)</title> |
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80 | 80 | <title>Future Benefits</title> |
81 | 81 |
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82 | 82 | <para> |
83 | | - In this first release of <acronym>WAL</acronym>, UNDO operation is |
84 | | - not implemented, because of lack of time. This means that changes |
| 83 | + UNDO operation is not implemented. This means that changes |
85 | 84 | made by aborted transactions will still occupy disk space and that |
86 | 85 | we still need a permanent <filename>pg_clog</filename> file to hold |
87 | 86 | the status of transactions, since we are not able to re-use |
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