Hi All
I am using wide table approach where I have might have more 1,00,0000
column qualifier
I am getting problem as below
Heap size problem by using scan on shell , as a solution I increase java
heap size by using cloudera manager to 4 GB
second I have below Native API code It took very long time to process can
any one help me on same?
public static ArrayList<String> getColumnQualifyerByPrefixScan(String
rowKey, String prefix) {
ArrayList<String> list = null;
try {
FilterList filterList = new FilterList(FilterList.Operator.MUST_PASS_ALL);
Filter filterB = new QualifierFilter(CompareFilter.CompareOp.EQUAL,
new BinaryPrefixComparator(Bytes.toBytes(prefix)));
filterList.addFilter(filterB);
list = new ArrayList<String>();
Get get1 = new Get(rowKey.getBytes());
get1.setFilter(filterList);
Result rs1 = hTable.get(get1);
int i = 0;
for (KeyValue kv : rs1.raw()) {
list.add(new String(kv.getQualifier()) + " ");
}
} catch (Exception e) {
//System.out.println(e.getMessage());
}
return list;
}
Thanks
Manjeet
--
luv all
