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From cnaur...@apache.org
Subject [2/3] hadoop git commit: HADOOP-12853. Change WASB documentation regarding page blob support. Contributed by Madhumita Chakraborty.
Date Tue, 01 Mar 2016 21:30:38 GMT
HADOOP-12853. Change WASB documentation regarding page blob support. Contributed by Madhumita
Chakraborty.

(cherry picked from commit f98dff329b1f94c9f53022baf0209fc1a7aaf7c2)


Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo
Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/bce33b51
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/bce33b51
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/bce33b51

Branch: refs/heads/branch-2
Commit: bce33b51790b90f0655e36df3a0394f5691f8d6e
Parents: 023c2d2
Author: Chris Nauroth <cnauroth@apache.org>
Authored: Tue Mar 1 13:18:42 2016 -0800
Committer: Chris Nauroth <cnauroth@apache.org>
Committed: Tue Mar 1 13:18:57 2016 -0800

----------------------------------------------------------------------
 hadoop-common-project/hadoop-common/CHANGES.txt      | 3 +++
 hadoop-tools/hadoop-azure/src/site/markdown/index.md | 6 +++---
 2 files changed, 6 insertions(+), 3 deletions(-)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/hadoop/blob/bce33b51/hadoop-common-project/hadoop-common/CHANGES.txt
----------------------------------------------------------------------
diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 300414b..97cd13d 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -567,6 +567,9 @@ Release 2.8.0 - UNRELEASED
     HADOOP-10865. Add a Crc32 chunked verification benchmark for both directly
     and non-directly buffer cases.  (szetszwo)
 
+    HADOOP-12853. Change WASB documentation regarding page blob support.
+    (Madhumita Chakraborty via cnauroth)
+
   BUG FIXES
 
     HADOOP-12617. SPNEGO authentication request to non-default realm gets

http://git-wip-us.apache.org/repos/asf/hadoop/blob/bce33b51/hadoop-tools/hadoop-azure/src/site/markdown/index.md
----------------------------------------------------------------------
diff --git a/hadoop-tools/hadoop-azure/src/site/markdown/index.md b/hadoop-tools/hadoop-azure/src/site/markdown/index.md
index d231f22..a4a7615 100644
--- a/hadoop-tools/hadoop-azure/src/site/markdown/index.md
+++ b/hadoop-tools/hadoop-azure/src/site/markdown/index.md
@@ -40,8 +40,8 @@ on the additional artifacts it requires, notably the
 * Present a hierarchical file system view by implementing the standard Hadoop
   [`FileSystem`](../api/org/apache/hadoop/fs/FileSystem.html) interface.
 * Supports configuration of multiple Azure Blob Storage accounts.
-* Supports both page blobs (suitable for most use cases, such as MapReduce) and
-  block blobs (suitable for continuous write use cases, such as an HBase
+* Supports both block blobs (suitable for most use cases, such as MapReduce) and
+  page blobs (suitable for continuous write use cases, such as an HBase
   write-ahead log).
 * Reference file system paths using URLs using the `wasb` scheme.
 * Also reference file system paths using URLs with the `wasbs` scheme for SSL
@@ -168,9 +168,9 @@ can be written any number of times, whereas block blobs can only be appended
to
 work for HBase logs, so page blob support was introduced to overcome this
 limitation.
 
-Page blobs can be used for other purposes beyond just HBase log files though.
 Page blobs can be up to 1TB in size, larger than the maximum 200GB size for block
 blobs.
+You should stick to block blobs for most usage, and page blobs are only tested in context
of HBase write-ahead logs.
 
 In order to have the files you create be page blobs, you must set the
 configuration variable `fs.azure.page.blob.dir` to a comma-separated list of


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