Kirill Tkalenko created IGNITE-19119:
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Summary: Prepare
org.apache.ignite.internal.storage.index.IndexStorage to build index
Key: IGNITE-19119
URL: https://issues.apache.org/jira/browse/IGNITE-19119
Project: Ignite
Issue Type: Improvement
Reporter: Kirill Tkalenko
Assignee: Kirill Tkalenko
Fix For: 3.0.0-beta2
We need to prepare the store (and its implementations) for index building.
We need the ability to save and retrieve the row ID for which we want to build
an index.
I propose the following design:
{code:java}
public interface IndexStorage {
...
/**
* Returns the row ID for which the index needs to be built, {@code null}
means that the index building has completed.
*
* <p>If index building has not started yet, it will return {@link
RowId#lowestRowId(int)}.
*
* @throws StorageException If failed to get the row ID.
*/
@Nullable RowId getRowIdToBuilt();
/**
* Sets the row ID for which the index needs to be built, {@code null}
means that the index is built.
*
* @apiNote This method <b>must</b> always be called inside the
corresponding partition's
* {@link
org.apache.ignite.internal.storage.MvPartitionStorage#runConsistently} closure.
*
* @param rowId Row ID.
* @throws StorageException If failed to set the row ID.
*/
void setRowIdToBuilt(@Nullable RowId rowId);
}
{code}
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