Examples with LocalCacheFileSystem alluxio.hadoop.LocalCacheFileSystem used on opensource projects

Example 1 with LocalCacheFileSystem

use of alluxio.hadoop.LocalCacheFileSystem in project presto by prestodb.

the class AlluxioCachingFileSystem method initialize.

@Override
public synchronized void initialize(URI uri, Configuration configuration) throws IOException {
    this.localCacheFileSystem = new LocalCacheFileSystem(dataTier, uriStatus -> {
        // CacheContext is the mechanism to pass the hiveFileContext to the source filesystem
        // hiveFileContext is critical to use to open file.
        CacheContext cacheContext = uriStatus.getCacheContext();
        checkState(cacheContext instanceof PrestoCacheContext);
        HiveFileContext hiveFileContext = ((PrestoCacheContext) cacheContext).getHiveFileContext();
        try {
            return dataTier.openFile(new Path(uriStatus.getPath()), hiveFileContext);
        } catch (Exception e) {
            throw new IOException("Failed to open file", e);
        }
    });
    this.cacheQuotaEnabled = configuration.getBoolean(USER_CLIENT_CACHE_QUOTA_ENABLED.getName(), false);
    localCacheFileSystem.initialize(uri, configuration);
}