alter 'tablename', {NAME=> 'cf'} https://stackoverflow.com/questions/29291305/how-to-add-new-column-family-to-an-existing-hbase-table How to add new column family to an existing HBase table? I created a table by create 'tablename', 'columnfamily1' Now is it possible to add another column family 'columnfamily2'? What is the method? stackoverflow.com
public static T get(List list, int i) { try { return list.get(i); } catch (Exception e) { return null; } } public static List add(List list, T item) { if(item == null) { return list; } list.add(item); return list; } public static String get(Map map, String k) { String v = map.get(k); return v == null ? "" : v; }
private Object o; public List magicalListGetter(Class klazz) { List list = new ArrayList(); list.add(klazz.cast(o)); try { list.add(klazz.getConstructor().newInstance()); } return list; } https://stackoverflow.com/questions/17840483/how-to-have-java-method-return-generic-list-of-any-type How to have Java method return generic list of any type? I would like to write a method that would return a j..
alter 'table_name', {NAME => 'family_name', METHOD => 'delete'} https://stackoverflow.com/questions/18763982/deleting-columns-in-hbase Deleting Columns in HBase In HBase, calling DeleteColumn() method i.e., essentially a schema change to a column family or deleting column families will result in downtime of HBase Cluster? stackoverflow.com
Lists.partition(java.util.List, int) https://stackoverflow.com/questions/12026885/is-there-a-common-java-utility-to-break-a-list-into-batches Is there a common Java utility to break a list into batches? I wrote myself a utility to break a list into batches of given size. I just wanted to know if there is already any apache commons util for this. public static List
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