HDFS-9042. Update document for the Storage policy name (Contributed by J.Andreina)
(cherry picked from commit d8455479b83e369fe9b5fe305c7beece93722fed) Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/18576216 Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/18576216 Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/18576216 Branch: refs/heads/branch-2 Commit: 1857621671fe2d855fef3580bcb7e7de73b742bd Parents: 764f8ba Author: Vinayakumar B <vinayakum...@apache.org> Authored: Sat Sep 12 12:36:12 2015 +0530 Committer: Vinayakumar B <vinayakum...@apache.org> Committed: Sat Sep 12 12:36:37 2015 +0530 ---------------------------------------------------------------------- hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 3 +++ .../hadoop-hdfs/src/site/markdown/ArchivalStorage.md | 4 ++-- 2 files changed, 5 insertions(+), 2 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/18576216/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt index 51a3f35..17e882d 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt +++ b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt @@ -1009,6 +1009,9 @@ Release 2.7.2 - UNRELEASED HDFS-9033. dfsadmin -metasave prints "NaN" for cache used%. (Brahma Reddy Battula via aajisaka) + HDFS-9042. Update document for the Storage policy name + (J.Andreina via vinayakumarb) + Release 2.7.1 - 2015-07-06 INCOMPATIBLE CHANGES http://git-wip-us.apache.org/repos/asf/hadoop/blob/18576216/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md index bde4e7b..cbfbaa1 100644 --- a/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md +++ b/hadoop-hdfs-project/hadoop-hdfs/src/site/markdown/ArchivalStorage.md @@ -73,14 +73,14 @@ The following is a typical storage policy table. | **Policy** **ID** | **Policy** **Name** | **Block Placement** **(n replicas)** | **Fallback storages** **for creation** | **Fallback storages** **for replication** | |:---- |:---- |:---- |:---- |:---- | -| 15 | Lasy\_Persist | RAM\_DISK: 1, DISK: *n*-1 | DISK | DISK | +| 15 | Lazy\_Persist | RAM\_DISK: 1, DISK: *n*-1 | DISK | DISK | | 12 | All\_SSD | SSD: *n* | DISK | DISK | | 10 | One\_SSD | SSD: 1, DISK: *n*-1 | SSD, DISK | SSD, DISK | | 7 | Hot (default) | DISK: *n* | \<none\> | ARCHIVE | | 5 | Warm | DISK: 1, ARCHIVE: *n*-1 | ARCHIVE, DISK | ARCHIVE, DISK | | 2 | Cold | ARCHIVE: *n* | \<none\> | \<none\> | -Note that the Lasy\_Persist policy is useful only for single replica blocks. For blocks with more than one replicas, all the replicas will be written to DISK since writing only one of the replicas to RAM\_DISK does not improve the overall performance. +Note that the Lazy\_Persist policy is useful only for single replica blocks. For blocks with more than one replicas, all the replicas will be written to DISK since writing only one of the replicas to RAM\_DISK does not improve the overall performance. ### Storage Policy Resolution
