huzheng 2b9c4fccf4 HDFS-14535. The default 8KB buffer in requestFileDescriptors#BufferedOutputStream is causing lots of heap allocation in HBase when using short-circut read
(cherry picked from commit ea3b0a184405c3feca024a560807ea215b6858b9)
(cherry picked from commit 9b61ecfcbeeb1d3c320f775b43c68d3e39a271a3)
(cherry picked from commit b082628e5a39fc1bc9d6094beb9c253cc096c701)
2019-06-17 07:21:46 -07:00

For the latest information about Hadoop, please visit our website at:

   http://hadoop.apache.org/core/

and our wiki, at:

   http://wiki.apache.org/hadoop/

This distribution includes cryptographic software.  The country in 
which you currently reside may have restrictions on the import, 
possession, use, and/or re-export to another country, of 
encryption software.  BEFORE using any encryption software, please 
check your country's laws, regulations and policies concerning the
import, possession, or use, and re-export of encryption software, to 
see if this is permitted.  See <http://www.wassenaar.org/> for more
information.

The U.S. Government Department of Commerce, Bureau of Industry and
Security (BIS), has classified this software as Export Commodity 
Control Number (ECCN) 5D002.C.1, which includes information security
software using or performing cryptographic functions with asymmetric
algorithms.  The form and manner of this Apache Software Foundation
distribution makes it eligible for export under the License Exception
ENC Technology Software Unrestricted (TSU) exception (see the BIS 
Export Administration Regulations, Section 740.13) for both object 
code and source code.

The following provides more details on the included cryptographic
software:
  Hadoop Core uses the SSL libraries from the Jetty project written 
by mortbay.org.
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