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inigo goiri <inigoiri@apache.org> in hadoop

HDFS-14784. Add more methods to WebHdfsTestUtil to support tests outside of package. Contributed by Chen Zhang.

HDFS-12904. Add DataTransferThrottler to the Datanode transfers. Contributed by Lisheng Sun.

HDFS-14256. Review Logging of NameNode Class. Contributed by David Mollitor.

HDFS-14104. Review getImageTxIdToRetain. Contributed by David Mollitor.

HDFS-14710. RBF: Improve some RPC performance by using previous block. Contributed by xuzq.

HDFS-14766. RBF: MountTableStoreImpl#getMountTableEntries returns extra entry. Contributed by Chen Zhang.

HDFS-14583. FileStatus#toString() will throw IllegalArgumentException. Contributed by xuzq.

HDFS-14756. RBF: getQuotaUsage may ignore some folders. Contributed by Chen Zhang.

HDFS-14714. RBF: implement getReplicatedBlockStats interface. Contributed by Chen Zhang.

HADOOP-16453. Update how exceptions are handled in NetUtils. Contributed by Lisheng Sun.

HDFS-14449. Expose total number of DT in JMX for Namenode. Contributed by Fengnan Li.

HDFS-14624. When decommissioning a node, log remaining blocks to replicate periodically. Contributed by Stephen O'Donnell.

HDFS-12703. Exceptions are fatal to decommissioning monitor. Contributed by He Xiaoqiao.

(cherry picked from commit 3d396786cf6eaab49c1c9b8b2a4652c2e440b9e3)

(cherry picked from commit 950aa74d5f284942e0ffc2f40bac0286c578d854)

HDFS-12703. Exceptions are fatal to decommissioning monitor. Contributed by He Xiaoqiao.

HDFS-12703. Exceptions are fatal to decommissioning monitor. Contributed by He Xiaoqiao.

(cherry picked from commit 3d396786cf6eaab49c1c9b8b2a4652c2e440b9e3)

(cherry picked from commit 950aa74d5f284942e0ffc2f40bac0286c578d854)

(cherry picked from commit fe40fbbd4d4858c55d081dffed9d68a4f0b8e923)

HDFS-12703. Exceptions are fatal to decommissioning monitor. Contributed by He Xiaoqiao.

(cherry picked from commit 3d396786cf6eaab49c1c9b8b2a4652c2e440b9e3)

HDFS-14620. RBF: Fix 'not a super user' error when disabling a namespace in kerberos with superuser principal. Contributed by luhuachao.

HADOOP-16385. Namenode crashes with 'RedundancyMonitor thread received Runtime exception'. Contributed by Ayush Saxena.

HADOOP-16385. Namenode crashes with 'RedundancyMonitor thread received Runtime exception'. Contributed by Ayush Saxena.

(cherry picked from commit aa9f0850e85203b2ce4f4a8dc8968e9186cdc67a)

HADOOP-16385. Namenode crashes with 'RedundancyMonitor thread received Runtime exception'. Contributed by Ayush Saxena.

(cherry picked from commit aa9f0850e85203b2ce4f4a8dc8968e9186cdc67a)

HDFS-14599. HDFS-12487 breaks test TestDiskBalancer.testDiskBalancerWithFedClusterWithOneNameServiceEmpty. Contributed by He Xiaoqiao.

HDFS-14036. RBF: Add hdfs-rbf-default.xml to HdfsConfiguration by default. Contributed by Takanobu Asanuma.

HDFS-14541. When evictableMmapped or evictable size is zero, do not throw NoSuchElementException.

(cherry picked from commit 0966407ad6fddb7adf60dba846d1f7c8a13b8ec1)

HDFS-14541. When evictableMmapped or evictable size is zero, do not throw NoSuchElementException.

(cherry picked from commit 0966407ad6fddb7adf60dba846d1f7c8a13b8ec1)

HDFS-14541. When evictableMmapped or evictable size is zero, do not throw NoSuchElementException.

(cherry picked from commit 0966407ad6fddb7adf60dba846d1f7c8a13b8ec1)

HDFS-14541. When evictableMmapped or evictable size is zero, do not throw NoSuchElementException.

(cherry picked from commit 0966407ad6fddb7adf60dba846d1f7c8a13b8ec1)

HDFS-14541. When evictableMmapped or evictable size is zero, do not throw NoSuchElementException.

HDFS-13371. NPE for FsServerDefaults.getKeyProviderUri() for clientProtocol communication between 2.7 and 3.X. Contributed by Sherwood Zheng.

HDFS-14201. Ability to disallow safemode NN to become active. Contributed by Xiao Liang and He Xiaoqiao.

HDFS-14545. RBF: Router should support GetUserMappingsProtocol. Contributed by Ayush Saxena.