public static class MetadataSchema.TabletsSection.TabletColumnFamily extends Object
Modifier and Type | Field and Description |
---|---|
static org.apache.hadoop.io.Text |
NAME
This needs to sort after all other column families for that tablet, because the
PREV_ROW_COLUMN sits in this and that needs to sort last because the
SimpleGarbageCollector relies on this. |
static ColumnFQ |
OLD_PREV_ROW_COLUMN
A temporary field in case a split fails and we need to roll back
|
static ColumnFQ |
PREV_ROW_COLUMN
README : very important that prevRow sort last to avoid race conditions between garbage
collector and split this needs to sort after everything else for that tablet
|
static ColumnFQ |
SPLIT_RATIO_COLUMN
A temporary field for splits to optimize certain operations
|
Constructor and Description |
---|
TabletColumnFamily() |
public static final org.apache.hadoop.io.Text NAME
PREV_ROW_COLUMN
sits in this and that needs to sort last because the
SimpleGarbageCollector relies on this.public static final ColumnFQ PREV_ROW_COLUMN
public static final ColumnFQ OLD_PREV_ROW_COLUMN
public static final ColumnFQ SPLIT_RATIO_COLUMN
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