Example usage for org.apache.hadoop.hdfs.server.namenode INode getId

Introduction

In this page you can find the example usage for org.apache.hadoop.hdfs.server.namenode INode getId.

Prototype

public abstract long getId();

Source Link

Document

Get inode id

Usage

From source file:io.hops.transaction.lock.RenameINodeLock.java

License:Apache License

@Override
protected void acquire(TransactionLocks locks) throws IOException {
    //[S] consider src = /a/b/c and dst = /d
    //during the acquire lock of src write locks will be acquired on parent of c and c
    //during the acquire lock of dst write lock on the root will be acquired but the snapshot 
    //layer will not let the request go to the db as it has already cached the root inode
    //one simple solution is that to acquire lock on the short path first
    //setPartitioningKey(PathMemcache.getInstance().getPartitionKey(locks.getInodeParam()[0]));
    String src = paths[0];/* w ww .  j  a  v  a2  s. co  m*/
    String dst = paths[1];
    Arrays.sort(paths, PATH_COMPARTOR);
    acquireINodeLocks();

    if (legacyRename) // In deprecated rename, it allows to move a dir to an existing destination.
    {
        List<INode> dstINodes = getPathINodes(dst);
        String[] dstComponents = INode.getPathNames(dst);
        String[] srcComponents = INode.getPathNames(src);
        INode lastComp = dstINodes.get(dstINodes.size() - 1);

        if (dstINodes.size() == dstComponents.length && lastComp.isDirectory()) {
            //the dst exist and is a directory.
            find(srcComponents[srcComponents.length - 1], lastComp.getId());
        }
    }

    acquireINodeAttributes();
}

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From source file:io.hops.transaction.lock.XAttrLock.java

License:Apache License

@Override
protected void acquire(TransactionLocks locks) throws IOException {
    BaseINodeLock inodeLock = (BaseINodeLock) locks.getLock(Type.INode);
    for (INode inode : inodeLock.getTargetINodes()) {

        if (attrs == null || attrs.isEmpty()) {
            //read all xattrs
            //Skip if the inode doesn't have any xattrs
            if (inode.getNumXAttrs() == 0) {
                EntityManager.snapshotMaintenance(HdfsTransactionContextMaintenanceCmds.NoXAttrsAttached,
                        inode.getId());
                continue;
            }/*from w w w  .java  2  s.  co  m*/
            acquireLockList(DEFAULT_LOCK_TYPE, StoredXAttr.Finder.ByInodeId, inode.getId());
        } else {
            acquireLockList(DEFAULT_LOCK_TYPE, StoredXAttr.Finder.ByPrimaryKeyBatch,
                    XAttrFeature.getPrimaryKeys(inode.getId(), attrs));
        }
    }
}

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