Example usage for org.apache.hadoop.hdfs.protocol CacheDirectiveInfo getPath

Introduction

In this page you can find the example usage for org.apache.hadoop.hdfs.protocol CacheDirectiveInfo getPath.

Prototype

public Path getPath() 

Source Link

Usage

From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

/**
 * Add a new CacheDirective.//w w  w . j  av a  2 s . c o m
 * 
 * @param info
 *            Information about a directive to add.
 * @param flags
 *            {@link CacheFlag}s to use for this operation.
 * @return the ID of the directive that was created.
 * @throws IOException
 *             if the directive could not be added
 */
public long addCacheDirective(CacheDirectiveInfo info, EnumSet<CacheFlag> flags) throws IOException {
    Preconditions.checkNotNull(info.getPath());
    Path path = new Path(getPathName(fixRelativePart(info.getPath()))).makeQualified(getUri(),
            getWorkingDirectory());
    return dfs.addCacheDirective(new CacheDirectiveInfo.Builder(info).setPath(path).build(), flags);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

/**
 * Modify a CacheDirective.//from ww  w  .  ja  v a2s  .  c om
 * 
 * @param info
 *            Information about the directive to modify. You must set the ID
 *            to indicate which CacheDirective you want to modify.
 * @param flags
 *            {@link CacheFlag}s to use for this operation.
 * @throws IOException
 *             if the directive could not be modified
 */
public void modifyCacheDirective(CacheDirectiveInfo info, EnumSet<CacheFlag> flags) throws IOException {
    if (info.getPath() != null) {
        info = new CacheDirectiveInfo.Builder(info)
                .setPath(new Path(getPathName(fixRelativePart(info.getPath()))).makeQualified(getUri(),
                        getWorkingDirectory()))
                .build();
    }
    dfs.modifyCacheDirective(info, flags);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

/**
 * List cache directives. Incrementally fetches results from the server.
 * //ww w  .j  ava  2s. com
 * @param filter
 *            Filter parameters to use when listing the directives, null to
 *            list all directives visible to us.
 * @return A RemoteIterator which returns CacheDirectiveInfo objects.
 */
public RemoteIterator<CacheDirectiveEntry> listCacheDirectives(CacheDirectiveInfo filter) throws IOException {
    if (filter == null) {
        filter = new CacheDirectiveInfo.Builder().build();
    }
    if (filter.getPath() != null) {
        filter = new CacheDirectiveInfo.Builder(filter)
                .setPath(new Path(getPathName(fixRelativePart(filter.getPath())))).build();
    }
    final RemoteIterator<CacheDirectiveEntry> iter = dfs.listCacheDirectives(filter);
    return new RemoteIterator<CacheDirectiveEntry>() {
        @Override
        public boolean hasNext() throws IOException {
            return iter.hasNext();
        }

        @Override
        public CacheDirectiveEntry next() throws IOException {
            // Although the paths we get back from the NameNode should always be
            // absolute, we call makeQualified to add the scheme and authority of
            // this DistributedFilesystem.
            CacheDirectiveEntry desc = iter.next();
            CacheDirectiveInfo info = desc.getInfo();
            Path p = info.getPath().makeQualified(getUri(), getWorkingDirectory());
            return new CacheDirectiveEntry(new CacheDirectiveInfo.Builder(info).setPath(p).build(),
                    desc.getStats());
        }
    };
}

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