org.apache.hadoop.hbase.master

Class MetaFixer

java.lang.Object

org.apache.hadoop.hbase.master.MetaFixer

@InterfaceAudience.Private
class MetaFixer
extends Object

Server-side fixing of bad or inconsistent state in hbase:meta. Distinct from MetaTableAccessor because MetaTableAccessor is about low-level manipulations driven by the Master. This class MetaFixer is employed by the Master and it 'knows' about holes and orphan and encapsulates their fixing on behalf of the Master.

Field Summary

Fields

Modifier and Type	Field and Description
private static org.slf4j.Logger	LOG
private MasterServices	masterServices

Constructor Summary

Constructors

Constructor and Description
MetaFixer(MasterServices masterServices)

Method Summary

Modifier and Type	Method and Description
private RegionInfo	buildRegionInfo(TableName tn, byte[] start, byte[] end)
(package private) void	fix()
(package private) boolean	fixHoles(CatalogJanitor.Report report) If hole, it papers it over by adding a region in the filesystem and to hbase:meta.
(package private) boolean	fixOverlaps(CatalogJanitor.Report report)
private RegionInfo	getHoleCover(Pair<RegionInfo,RegionInfo> hole)

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final org.slf4j.Logger LOG

masterServices

private final MasterServices masterServices

Constructor Detail

MetaFixer

MetaFixer(MasterServices masterServices)

Method Detail

fix

void fix()
  throws IOException

Throws:

IOException

fixHoles

boolean fixHoles(CatalogJanitor.Report report)
          throws IOException

If hole, it papers it over by adding a region in the filesystem and to hbase:meta. Does not assign.

Returns:

True if we fixed any 'holes'.

Throws:

IOException

getHoleCover

private RegionInfo getHoleCover(Pair<RegionInfo,RegionInfo> hole)

Returns:

Calculated RegionInfo that covers the hole hole

buildRegionInfo

private RegionInfo buildRegionInfo(TableName tn,
                                   byte[] start,
                                   byte[] end)

fixOverlaps

boolean fixOverlaps(CatalogJanitor.Report report)
             throws IOException

Throws:

IOException