I am testing the performance of HBase, after about one weeks's test.
I found the HBase become more and more slow when inserting data.

(3 regionserver, HBase 0.19.1 and hadoop 0.19.2)

Each row have about 32 column (in one family), the row have about 400 bytes
raw data.

For example:
1. when there are only 10-32 regions, the inserting time about 550000 rows
is about 3-4 minutes.
2. when there are about 64 regions, the inserting time about 550000 rows is
about 6-10 minutes.
3. and then more than 10 minutes.
.....

Schubert

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