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[HDFS-4804] WARN when users set the block balanced preference percent below 0.5 or above 1.0 - HDFS - [issue]
...With the new feature added in HDFS-1804 (Add a new block-volume device choosing policy that looks at free space), it'd be useful to have a WARN log if the operator  sets dfs.datanode.fs...
http://issues.apache.org/jira/browse/HDFS-4804    Author: Stephen Chu, 2013-05-16, 20:40
[HDFS-4444] Add space between total transaction time and number of transactions in FSEditLog#printStatistics - HDFS - [issue]
...Currently, when we log statistics, we see something like13/01/25 23:16:59 INFO namenode.FSNamesystem: Number of transactions: 0 Total time for transactions(ms): 0Number of transactions batch...
http://issues.apache.org/jira/browse/HDFS-4444    Author: Stephen Chu, 2013-05-03, 04:10
[HDFS-4671] DFSAdmin fetchImage should require superuser privilege even when security is not enabled - HDFS - [issue]
...When security is not enabled, non-superusers can fetch the fsimage. This is problematic because the non-superusers can then process the fsimage for contents the user should not have access t...
http://issues.apache.org/jira/browse/HDFS-4671    Author: Stephen Chu, 2013-04-24, 16:53
[HDFS-3483] Better error message when hdfs fsck is run against a ViewFS config - HDFS - [issue]
...I'm running a HA + secure + federated cluster.When I run "hdfs fsck /nameservices/ha-nn-uri/", I see the following:bash-3.2$ hdfs fsck /nameservices/ha-nn-uri/FileSystem is viewfs://oracle/D...
http://issues.apache.org/jira/browse/HDFS-3483    Author: Stephen Chu, 2013-02-06, 17:05
[HDFS-3031] HA: Fix complete() and getAdditionalBlock() RPCs to be idempotent. - HDFS - [issue]
...I executed section 3.4 of Todd's HA test plan. https://issues.apache.org/jira/browse/HDFS-16231. A large file upload is started.2. While the file is being uploaded, the administrator kills t...
http://issues.apache.org/jira/browse/HDFS-3031    Author: Stephen Chu, 2013-02-01, 00:10
[HDFS-4237] Add unit tests for HTTP-based filesystems against secure MiniDFSCluster - HDFS - [issue]
...Now that we can start a secure MiniDFSCluster (HADOOP-9004), we need more security unit tests.A good area to add secure tests is the HTTP-based filesystems (WebHDFS, HttpFs)....
http://issues.apache.org/jira/browse/HDFS-4237    Author: Stephen Chu, 2013-01-23, 02:18
[HDFS-4295] Using port 1023 should be valid when starting Secure DataNode - HDFS - [issue]
...In SecureDataNodeStarter:if ((ss.getLocalPort() >= 1023 || listener.getPort() >= 1023) &&        UserGroupInformation.isSecurityEnabled()) {  ...
http://issues.apache.org/jira/browse/HDFS-4295    Author: Stephen Chu, 2012-12-11, 14:09
[HDFS-4281] NameNode recovery does not detect NN RPC address on HA cluster - HDFS - [issue]
...On a shut down HA cluster, I ran "hdfs namenode -recover" and encountered:You have selected Metadata Recovery mode.  This mode is intended to recover lost metadata on a corrupt filesyst...
http://issues.apache.org/jira/browse/HDFS-4281    Author: Stephen Chu, 2012-12-06, 02:05
[HDFS-4026] Improve error message for dfsadmin -refreshServiceAcl - HDFS - [issue]
...I ran hdfs dfsadmin -refreshServiceAcl on a cluster that did not have Service Level Authorization enabled:[schu@cs-10-20-90-154 ~]$ hdfs dfsadmin -refreshServiceAclrefreshServiceAcl: [schu@c...
http://issues.apache.org/jira/browse/HDFS-4026    Author: Stephen Chu, 2012-11-20, 21:40
[HDFS-3813] Log error message if security and WebHDFS are enabled but principal/keytab are not configured - HDFS - [issue]
...I configured a secure HDFS cluster, but failed to start the NameNode because I had enabled WebHDFS without specifying dfs.web.authentication.kerberos.principal in hdfs-site.xml.In the NN log...
http://issues.apache.org/jira/browse/HDFS-3813    Author: Stephen Chu, 2012-11-16, 23:22
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