/// <summary>Create a block that is currently being constructed.</summary>
public BlockInfoContiguousUnderConstruction(Block blk, short replication, HdfsServerConstants.BlockUCState
state, DatanodeStorageInfo[] targets)
: base(blk, replication)
{
System.Diagnostics.Debug.Assert(GetBlockUCState() != HdfsServerConstants.BlockUCState
.Complete, "BlockInfoUnderConstruction cannot be in COMPLETE state");
this.blockUCState = state;
SetExpectedLocations(targets);
}
/// <summary>Commit block's length and generation stamp as reported by the client.</summary>
/// <remarks>
/// Commit block's length and generation stamp as reported by the client.
/// Set block state to
/// <see cref="Org.Apache.Hadoop.Hdfs.Server.Common.HdfsServerConstants.BlockUCState.Committed
/// "/>
/// .
/// </remarks>
/// <param name="block">- contains client reported block length and generation</param>
/// <exception cref="System.IO.IOException">if block ids are inconsistent.</exception>
internal virtual void CommitBlock(Block block)
{
if (GetBlockId() != block.GetBlockId())
{
throw new IOException("Trying to commit inconsistent block: id = " + block.GetBlockId
() + ", expected id = " + GetBlockId());
}
blockUCState = HdfsServerConstants.BlockUCState.Committed;
this.SetNumBytes(block.GetNumBytes());
// Sort out invalid replicas.
SetGenerationStampAndVerifyReplicas(block.GetGenerationStamp());
}
/// <summary>Convert a complete block to an under construction block.</summary>
/// <returns>BlockInfoUnderConstruction - an under construction block.</returns>
public virtual BlockInfoContiguousUnderConstruction ConvertToBlockUnderConstruction
(HdfsServerConstants.BlockUCState s, DatanodeStorageInfo[] targets)
{
if (IsComplete())
{
BlockInfoContiguousUnderConstruction ucBlock = new BlockInfoContiguousUnderConstruction
(this, GetBlockCollection().GetBlockReplication(), s, targets);
ucBlock.SetBlockCollection(GetBlockCollection());
return(ucBlock);
}
// the block is already under construction
BlockInfoContiguousUnderConstruction ucBlock_1 = (BlockInfoContiguousUnderConstruction
)this;
ucBlock_1.SetBlockUCState(s);
ucBlock_1.SetExpectedLocations(targets);
ucBlock_1.SetBlockCollection(GetBlockCollection());
return(ucBlock_1);
}
internal virtual void SetBlockUCState(HdfsServerConstants.BlockUCState s)
{
blockUCState = s;
}
