Field Detail

• LOG

  private static final org.apache.commons.logging.Log LOG

Constructor Detail

• HBaseFsckRepair

  public HBaseFsckRepair()

Method Detail

• fixMultiAssignment

  public static void fixMultiAssignment(HConnection connection,
                        HRegionInfo region,
                        List<ServerName> servers)
                                 throws IOException,
                                        org.apache.zookeeper.KeeperException,
                                        InterruptedException

  Fix multiple assignment by doing silent closes on each RS hosting the region and then force ZK unassigned node to OFFLINE to trigger assignment by master.

  Parameters:

  connection - HBase connection to the cluster

  region - Region to undeploy

  servers - list of Servers to undeploy from

  Throws:

  IOException

  org.apache.zookeeper.KeeperException

  InterruptedException

• fixUnassigned

  public static void fixUnassigned(Admin admin,
                   HRegionInfo region)
                            throws IOException,
                                   org.apache.zookeeper.KeeperException,
                                   InterruptedException

  Fix unassigned by creating/transition the unassigned ZK node for this region to OFFLINE state with a special flag to tell the master that this is a forced operation by HBCK. This assumes that info is in META.

  Parameters:

  admin -

  region -

  Throws:

  IOException

  org.apache.zookeeper.KeeperException

  InterruptedException

• forceOfflineInZK

  private static void forceOfflineInZK(Admin admin,
                      HRegionInfo region)
                                throws ZooKeeperConnectionException,
                                       org.apache.zookeeper.KeeperException,
                                       IOException,
                                       InterruptedException

  In 0.90, this forces an HRI offline by setting the RegionTransitionData in ZK to have HBCK_CODE_NAME as the server. This is a special case in the AssignmentManager that attempts an assign call by the master.

  Throws:

  ZooKeeperConnectionException

  org.apache.zookeeper.KeeperException

  IOException

  InterruptedException

  See Also:

  This doesn't seem to work properly in the updated version of 0.92+'s hbck so we use assign to force the region into transition. This has the side-effect of requiring a HRegionInfo that considers regionId (timestamp) in comparators that is addressed by HBASE-5563.

• waitUntilAssigned

  public static void waitUntilAssigned(Admin admin,
                       HRegionInfo region)
                                throws IOException,
                                       InterruptedException

  Throws:

  IOException

  InterruptedException

• closeRegionSilentlyAndWait

  public static void closeRegionSilentlyAndWait(HConnection connection,
                                ServerName server,
                                HRegionInfo region)
                                         throws IOException,
                                                InterruptedException

  Contacts a region server and waits up to hbase.hbck.close.timeout ms (default 120s) to close the region. This bypasses the active hmaster.

  Throws:

  IOException

  InterruptedException

• fixMetaHoleOnlineAndAddReplicas

  public static void fixMetaHoleOnlineAndAddReplicas(org.apache.hadoop.conf.Configuration conf,
                                     HRegionInfo hri,
                                     Collection<ServerName> servers,
                                     int numReplicas)
                                              throws IOException

  Puts the specified HRegionInfo into META with replica related columns

  Throws:

  IOException

• createHDFSRegionDir

  public static HRegion createHDFSRegionDir(org.apache.hadoop.conf.Configuration conf,
                            HRegionInfo hri,
                            HTableDescriptor htd)
                                     throws IOException

  Creates, flushes, and closes a new region.

  Throws:

  IOException

• removeParentInMeta

  public static void removeParentInMeta(org.apache.hadoop.conf.Configuration conf,
                        HRegionInfo hri)
                                 throws IOException

  Throws:

  IOException