org.apache.accumulo.core.metadata.schema
Class MetadataSchema.TabletsSection.TabletColumnFamily

java.lang.Object
  org.apache.accumulo.core.metadata.schema.MetadataSchema.TabletsSection.TabletColumnFamily

Enclosing class:

MetadataSchema.TabletsSection

public static class MetadataSchema.TabletsSection.TabletColumnFamily
extends Object

Column family for storing the tablet information needed by clients

Field Summary

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 Summary

MetadataSchema.TabletsSection.TabletColumnFamily()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAME

public static final 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.

PREV_ROW_COLUMN

public static final 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

OLD_PREV_ROW_COLUMN

public static final ColumnFQ OLD_PREV_ROW_COLUMN

A temporary field in case a split fails and we need to roll back

SPLIT_RATIO_COLUMN

public static final ColumnFQ SPLIT_RATIO_COLUMN

A temporary field for splits to optimize certain operations

Constructor Detail

MetadataSchema.TabletsSection.TabletColumnFamily

public MetadataSchema.TabletsSection.TabletColumnFamily()