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feat: add vacuum_partition functionality with initialization and execution logic

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Amr Elmohamady
2025-09-27 23:55:14 +03:00
committed by drrtuy
parent 899f0f6aae
commit 3d2e61a637
18 changed files with 832 additions and 11 deletions
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33
versioning/BRM/extentmap.h
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@@ -639,6 +639,39 @@ class ExtentMap : public Undoable
uint16_t dbRoot, uint32_t& partitionNum, uint16_t& segmentNum,
std::vector<CreateStripeColumnExtentsArgOut>& extents);
/** @brief Allocate a "stripe" of hidden extents for columns in a table (in DBRoot)
*
* Creates a new hidden partition that is not visible to normal query operations.
* The partition can be used as a destination for data movement operations like VACUUM.
* All extents are initially marked with EXTENTOUTOFSERVICE status and remain
* hidden even when HWM is set, unlike normal extents which become visible
* when HWM is set.
*
* @param cols (in) List of column OIDs and column widths
* @param dbRoot (in) DBRoot for requested extents.
* @param partitionNum (in/out) Partition number in file path.
* If allocating OID's first extent for this DBRoot, then
* partitionNum is input, else it is an output arg.
* @param segmentNum (out) Segment number selected for new extents.
* @param extents (out) list of lbids, numBlks, and fbo for new extents
*/
EXPORT void createHiddenStripeColumnExtents(const std::vector<CreateStripeColumnExtentsArgIn>& cols,
uint16_t dbRoot, uint32_t& partitionNum, uint16_t& segmentNum,
std::vector<CreateStripeColumnExtentsArgOut>& extents);
/** @brief Make a hidden partition visible to normal query operations
*
* Changes the status of all extents in the specified partition from
* EXTENTOUTOFSERVICE to EXTENTAVAILABLE, making them visible to queries.
* This is used to make partitions created with createHiddenStripeColumnExtents
* visible after data movement operations like VACUUM are complete.
*
* @param oids (in) Set of column OIDs in the partition
* @param dbRoot (in) The DBRoot containing the partition
* @param partitionNum (in) The partition number to make visible
*/
EXPORT void makePartitionVisible(const std::set<OID_t>& oids, uint16_t dbRoot, uint32_t partitionNum);
/** @brief Allocates an extent for a column file
*
* Allocates an extent for the specified OID and DBroot.