/**
* This utility method creates a new Hbase HColumnDescriptor object based on a Thrift
* ColumnDescriptor "struct".
*
* @param in Thrift ColumnDescriptor object
* @return HColumnDescriptor
* @throws IllegalArgument
*/
public static HColumnDescriptor colDescFromThrift(ColumnDescriptor in) throws IllegalArgument {
Compression.Algorithm comp =
Compression.getCompressionAlgorithmByName(in.compression.toLowerCase());
BloomType bt = BloomType.valueOf(in.bloomFilterType);
if (in.name == null || !in.name.hasRemaining()) {
throw new IllegalArgument("column name is empty");
}
byte[] parsedName = KeyValue.parseColumn(Bytes.getBytes(in.name))[0];
HColumnDescriptor col =
new HColumnDescriptor(parsedName)
.setMaxVersions(in.maxVersions)
.setCompressionType(comp)
.setInMemory(in.inMemory)
.setBlockCacheEnabled(in.blockCacheEnabled)
.setTimeToLive(in.timeToLive > 0 ? in.timeToLive : Integer.MAX_VALUE)
.setBloomFilterType(bt);
return col;
}
/**
* Get names of supported compression algorithms. The names are acceptable by HFile.Writer.
*
* @return Array of strings, each represents a supported compression algorithm. Currently, the
* following compression algorithms are supported.
* <ul>
* <li>"none" - No compression.
* <li>"gz" - GZIP compression.
* </ul>
*/
public static String[] getSupportedCompressionAlgorithms() {
return Compression.getSupportedAlgorithms();
}