From 1857621671fe2d855fef3580bcb7e7de73b742bd Mon Sep 17 00:00:00 2001 From: Vinayakumar B Date: Sat, 12 Sep 2015 12:36:12 +0530 Subject: [PATCH] HDFS-9042. Update document for the Storage policy name (Contributed by J.Andreina) (cherry picked from commit d8455479b83e369fe9b5fe305c7beece93722fed) --- hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt | 3 +++ .../hadoop-hdfs/src/site/markdown/ArchivalStorage.md | 4 ++-- 2 files changed, 5 insertions(+), 2 deletions(-) diff --git a/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt b/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt index 51a3f35cf42..17e882dd14b 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 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 bde4e7b61c0..cbfbaa16d5b 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* | \ | ARCHIVE | | 5 | Warm | DISK: 1, ARCHIVE: *n*-1 | ARCHIVE, DISK | ARCHIVE, DISK | | 2 | Cold | ARCHIVE: *n* | \ | \ | -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