public ColumnDescriptor()
{
this.maxVersions = 3;
this.compression = "NONE";
this.inMemory = false;
this.maxValueLength = 2147483647;
this.bloomFilterType = "NONE";
this.bloomFilterVectorSize = 0;
this.bloomFilterNbHashes = 0;
this.blockCacheEnabled = false;
this.timeToLive = -1;
}