[IGNITE-16980] PageMemoryPartitionStorage#write() can leak page slots

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Fix Version/s: 3.0.0-alpha5
• Component/s: persistence
• Labels: ignite-3
• Epic Link: New PageMemory Persistent Store
• Assignee: Kirill Tkalenko
• Reporter: Roman Puchkovskiy
• Created: 13/May/22 11:11
• Updated: 01/Jun/22 09:08
• Resolved: 01/Jun/22 09:08

Description

public void write(DataRow row) throws StorageException {
    try {
        TableDataRow dataRow = wrap(row);

        freeList.insertDataRow(dataRow);

        tree.put(dataRow);
    } catch (IgniteInternalCheckedException e) {
        throw new StorageException("Error writing row", e);
{{    }}}
}

This code always occupies a slot in a data page, even if the key was already put to the partition. So, if 2 puts with same key occur, one page slot is wasted.