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Merged from trunk. HDFS-4221. Remove the format limitation point from BKJM documentation as HDFS-3810 closed. Contributed by Rakesh R. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1608777 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Uma Maheswara Rao G 2014-07-08 13:33:05 +00:00
parent 5e22de1cf7
commit 50c7825d10
2 changed files with 5 additions and 19 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -532,6 +532,9 @@ Release 2.5.0 - UNRELEASED
HDFS-4286. Changes from BOOKKEEPER-203 broken capability of including
bookkeeper-server jar in hidden package of BKJM (Rakesh R via umamahesh)
HDFS-4221. Remove the format limitation point from BKJM documentation as HDFS-3810
closed. (Rakesh R via umamahesh)
BREAKDOWN OF HDFS-2006 SUBTASKS AND RELATED JIRAS
HDFS-6299. Protobuf for XAttr and client-side implementation. (Yi Liu via umamahesh)

21
hadoop-hdfs-project/hadoop-hdfs/src/site/apt/HDFSHighAvailabilityWithNFS.apt.vm
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@ -855,22 +855,5 @@ digest:hdfs-zkfcs:vlUvLnd8MlacsE80rDuu6ONESbM=:rwcda
*** <<Current limitations>>
1) NameNode format command will not format the BookKeeper data automatically.
We have to clean the data manually from BookKeeper cluster
and create the /ledgers/available path in Zookeeper.
----
$ zkCli.sh create /ledgers 0
$ zkCli.sh create /ledgers/available 0
----
Note:
bookkeeper://zk1:2181;zk2:2181;zk3:2181/hdfsjournal
The final part /hdfsjournal specifies the znode in zookeeper where
ledger metadata will be stored. Administrators may set this to anything
they wish.
2) Security in BookKeeper. BookKeeper does not support SASL nor SSL for
connections between the NameNode and BookKeeper storage nodes.
3) Auto-Recovery of storage node failures. Work inprogress
{{{https://issues.apache.org/jira/browse/BOOKKEEPER-237 }BOOKKEEPER-237}}.
Currently we have the tools to manually recover the data from failed storage nodes.
1) Security in BookKeeper. BookKeeper does not support SASL nor SSL for
connections between the NameNode and BookKeeper storage nodes.