HBASE-20501 update minimum supported Hadoop version to 2.7.1.

Signed-off-by: Andrew Purtell <apurt...@apache.org>


Project: http://git-wip-us.apache.org/repos/asf/hbase/repo
Commit: http://git-wip-us.apache.org/repos/asf/hbase/commit/c19fbf2b
Tree: http://git-wip-us.apache.org/repos/asf/hbase/tree/c19fbf2b
Diff: http://git-wip-us.apache.org/repos/asf/hbase/diff/c19fbf2b

Branch: refs/heads/HBASE-19064
Commit: c19fbf2be0c104174b21dc372e4b4dfae4b61096
Parents: b889c8a
Author: Sean Busbey <bus...@apache.org>
Authored: Wed May 30 21:22:42 2018 -0500
Committer: Sean Busbey <bus...@apache.org>
Committed: Wed May 30 21:22:42 2018 -0500

----------------------------------------------------------------------
 dev-support/hbase-personality.sh               | 25 +++++++++++++-------
 src/main/asciidoc/_chapters/configuration.adoc | 26 ++++++++++-----------
 src/main/asciidoc/_chapters/upgrading.adoc     | 12 ++++++++--
 3 files changed, 40 insertions(+), 23 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hbase/blob/c19fbf2b/dev-support/hbase-personality.sh
----------------------------------------------------------------------
diff --git a/dev-support/hbase-personality.sh b/dev-support/hbase-personality.sh
index b033645..2c6e4a8 100755
--- a/dev-support/hbase-personality.sh
+++ b/dev-support/hbase-personality.sh
@@ -443,23 +443,32 @@ function hadoopcheck_rebuild
 
   # All supported Hadoop versions that we want to test the compilation with
   # See the Hadoop section on prereqs in the HBase Reference Guide
-  hbase_common_hadoop2_versions="2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 2.7.1 2.7.2 
2.7.3 2.7.4"
-  if [[ "${PATCH_BRANCH}" = branch-1* ]]; then
-    yetus_info "Setting Hadoop versions to test based on branch-1-ish rules."
+  hbase_common_hadoop2_versions="2.7.1 2.7.2 2.7.3 2.7.4"
+  if [[ "${PATCH_BRANCH}" = branch-1.* ]] && [[ "${PATCH_BRANCH#branch-1.}" 
-lt "5" ]]; then
+    yetus_info "Setting Hadoop 2 versions to test based on before-branch-1.5 
rules."
     if [[ "${QUICK_HADOOPCHECK}" == "true" ]]; then
       hbase_hadoop2_versions="2.4.1 2.5.2 2.6.5 2.7.4"
     else
-      hbase_hadoop2_versions="2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 
${hbase_common_hadoop2_versions}"
+      hbase_hadoop2_versions="2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.1 2.6.2 2.6.3 
2.6.4 2.6.5 ${hbase_common_hadoop2_versions}"
     fi
-    hbase_hadoop3_versions=""
-  else # master or a feature branch
-    yetus_info "Setting Hadoop versions to test based on 
branch-2/master/feature branch rules."
+  elif [[ "${PATCH_BRANCH}" = branch-2.0 ]]; then
+    yetus_info "Setting Hadoop 2 versions to test based on branch-2.0 rules."
     if [[ "${QUICK_HADOOPCHECK}" == "true" ]]; then
       hbase_hadoop2_versions="2.6.5 2.7.4"
     else
+      hbase_hadoop2_versions="2.6.1 2.6.2 2.6.3 2.6.4 2.6.5 
${hbase_common_hadoop2_versions}"
+    fi
+  else
+    yetus_info "Setting Hadoop 2 versions to test based on 
branch-1.5+/branch-2.1+/master/feature branch rules."
+    if [[ "${QUICK_HADOOPCHECK}" == "true" ]]; then
+      hbase_hadoop2_versions="2.7.4"
+    else
       hbase_hadoop2_versions="${hbase_common_hadoop2_versions}"
     fi
-    hbase_hadoop3_versions="3.0.0"
+  fi
+  hbase_hadoop3_versions="3.0.0"
+  if [[ "${PATCH_BRANCH}" = branch-1* ]]; then
+    hbase_hadoop3_versions=""
   fi
 
   export MAVEN_OPTS="${MAVEN_OPTS}"

http://git-wip-us.apache.org/repos/asf/hbase/blob/c19fbf2b/src/main/asciidoc/_chapters/configuration.adoc
----------------------------------------------------------------------
diff --git a/src/main/asciidoc/_chapters/configuration.adoc 
b/src/main/asciidoc/_chapters/configuration.adoc
index 1be9e13..31250ff 100644
--- a/src/main/asciidoc/_chapters/configuration.adoc
+++ b/src/main/asciidoc/_chapters/configuration.adoc
@@ -217,20 +217,20 @@ Use the following legend to interpret this table:
 * "X" = not supported
 * "NT" = Not tested
 
-[cols="1,1,1,1", options="header"]
+[cols="1,1,1,1,1,1", options="header"]
 |===
-| | HBase-1.2.x | HBase-1.3.x | HBase-2.0.x
-|Hadoop-2.4.x | S | S | X
-|Hadoop-2.5.x | S | S | X
-|Hadoop-2.6.0 | X | X | X
-|Hadoop-2.6.1+ | S | S | S
-|Hadoop-2.7.0 | X | X | X
-|Hadoop-2.7.1+ | S | S | S
-|Hadoop-2.8.[0-1] | X | X | X
-|Hadoop-2.8.2 | NT | NT | NT
-|Hadoop-2.8.3+ | NT | NT | S
-|Hadoop-2.9.0 | X | X | X
-|Hadoop-3.0.0 | NT | NT | NT
+| | HBase-1.2.x | HBase-1.3.x | HBase-1.5.x | HBase-2.0.x | HBase-2.1.x
+|Hadoop-2.4.x | S | S | X | X | X
+|Hadoop-2.5.x | S | S | X | X | X
+|Hadoop-2.6.0 | X | X | X | X | X
+|Hadoop-2.6.1+ | S | S | X | S | X
+|Hadoop-2.7.0 | X | X | X | X | X
+|Hadoop-2.7.1+ | S | S | S | S | S
+|Hadoop-2.8.[0-1] | X | X | X | X | X
+|Hadoop-2.8.2 | NT | NT | NT | NT | NT
+|Hadoop-2.8.3+ | NT | NT | NT | S | S
+|Hadoop-2.9.0 | X | X | X | X | X
+|Hadoop-3.0.0 | NT | NT | NT | NT | NT
 |===
 
 .Hadoop Pre-2.6.1 and JDK 1.8 Kerberos

http://git-wip-us.apache.org/repos/asf/hbase/blob/c19fbf2b/src/main/asciidoc/_chapters/upgrading.adoc
----------------------------------------------------------------------
diff --git a/src/main/asciidoc/_chapters/upgrading.adoc 
b/src/main/asciidoc/_chapters/upgrading.adoc
index da4430a..6f0405d 100644
--- a/src/main/asciidoc/_chapters/upgrading.adoc
+++ b/src/main/asciidoc/_chapters/upgrading.adoc
@@ -86,8 +86,16 @@ for warning about incompatible changes). All effort will be 
made to provide a de
 * Example: Old compiled Coprocessor, Filter, or Plugin code will work 
unchanged with the new jars.
 
 .Dependency Compatibility
-* An upgrade of HBase will not require an incompatible upgrade of a dependent 
project, including the Java runtime.
-* Example: An upgrade of Hadoop will not invalidate any of the compatibilities 
guarantees we made.
+* An upgrade of HBase will not require an incompatible upgrade of a dependent 
project, except for Apache Hadoop.
+* An upgrade of HBase will not require an incompatible upgrade of the Java 
runtime.
+* Example: Upgrading HBase to a version that supports _Dependency 
Compatibility_ won't require that you upgrade your Apache ZooKeeper service.
+* Example: If your current version of HBase supported running on JDK 8, then 
an upgrade to a version that supports _Dependency Compatibility_ will also run 
on JDK 8.
+
+.Hadoop Versions
+[TIP]
+====
+Previously, we tried to maintain dependency compatibility for the underly 
Hadoop service but over the last few years this has proven untenable. While the 
HBase project attempts to maintain support for older versions of Hadoop, we 
drop the "supported" designator for minor versions that fail to continue to see 
releases. Additionally, the Hadoop project has its own set of compatibility 
guidelines, which means in some cases having to update to a newer supported 
minor release might break some of our compatibility promises.
+====
 
 .Operational Compatibility
 * Metric changes

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