Fixing page pruning / compaction crash #15
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dAdAbird
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Issue: the heap AM has a function which automatically compacts pages when certain conditions are met. When this happens, it moves the tuples around within the page. As encryption uses the offset of tuples for decrypting them, this results in garbage data and possible crashes. Fix: this commit copies the two compaction functions from the server code, and modifies them to re-encrypt data when moved. This is not optimized at all, if needed, we can improve this by a lot. Also, for now only one execution path is handled from the two, as that's the only one hit by sysbench. We'll have to figure out a testcase for the other and fix that too, for now, it only contains an assert(0).
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Issue: the heap AM has a function which automatically compacts pages when certain conditions are met. When this happens, it moves the tuples around within the page. As encryption uses the offset of tuples for decrypting them, this results in garbage data and possible crashes.
Fix: this commit copies the two compaction functions from the server code, and modifies them to re-encrypt data when moved. This is not optimized at all, if needed, we can improve this by a lot.
Also, for now only one execution path is handled from the two, as that's the only one hit by sysbench. We'll have to figure out a testcase for the other and fix that too, for now, it only contains an assert(0).