Bulk Operation

HADOOP-12956 Use Slf4jRequestLog for HttpRequestLog

HADOOP-12956 Support log4j2 API in GenericTestUtils.setLogLevel

HADOOP-12956 Remove EventCounter and Log counters from JVM Metrics

HADOOP-12956 Replace LogCapturer with mock

HADOOP-12956 Move remaining log4j APIs over to slf4j in hadoop-common.

HADOOP-12956 Move logging APIs over to slf4j in hadoop-tools - Part2

HADOOP-12956 Move hadoop-openstack to slf4j

HADOOP-12956 Replace commons-logging APIs with slf4j in StreamPumper

HADOOP-12956 Add GenericTestUtils.DelayAnswer that accept slf4j logger API

HADOOP-12956 Add ReflectionUtils.logThreadInfo that accept slf4j logger API

HADOOP-12956 Add ServiceOperations.stopQuietly that accept slf4j logger API

HADOOP-12956 Use GenericTestUtils.setLogLevel when available in hadoop-common

HADOOP-12956 Deprecate public APIs relate to log4j1

HADOOP-12956 Use GenericTestUtils.setLogLevel when available in hadoop-tools

HADOOP-12956 Add IOUtils.cleanupWithLogger that accepts slf4j logger API

HADOOP-12956 Move commons logging APIs over to slf4j in hadoop-common

HADOOP-12956 Move logging APIs over to slf4j in hadoop-tools

HADOOP-12956 Update SLF4J from 1.7.10 to 1.7.25

HADOOP-12956 Move log4j APIs over to slf4j in hadoop-common