| clear query|facets|time |
Search criteria: .
Results from 51 to 60 from
492 (0.135s).
|
|
|
Loading phrases to help you
refine your search...
|
|
[HDFS-4486] Add log category for long-running DFSClient notices - HDFS - [issue]
|
|
...There are a number of features in the DFS client which are transparent but can make a fairly big difference for performance – two in particular are short circuit reads and native check...
|
|
|
http://issues.apache.org/jira/browse/HDFS-4486
Author: Todd Lipcon,
2013-02-08, 21:56
|
|
|
[HDFS-3077] Quorum-based protocol for reading and writing edit logs - HDFS - [issue]
|
|
...Currently, one of the weak points of the HA design is that it relies on shared storage such as an NFS filer for the shared edit log. One alternative that has been proposed is to depend on Bo...
|
|
|
http://issues.apache.org/jira/browse/HDFS-3077
Author: Todd Lipcon,
2013-02-08, 16:42
|
|
|
[HDFS-4182] SecondaryNameNode leaks NameCache entries - HDFS - [issue]
|
|
...We recently saw an issue where a 2NN ran out of memory, even though it had a relatively small fsimage. When we looked at the heap dump, we saw that all of the memory had gone to entries in t...
|
|
|
http://issues.apache.org/jira/browse/HDFS-4182
Author: Todd Lipcon,
2013-02-06, 17:05
|
|
|
[HDFS-2882] DN continues to start up, even if block pool fails to initialize - HDFS - [issue]
|
|
...I started a DN on a machine that was completely out of space on one of its drives. I saw the following:2012-02-02 09:56:50,499 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: Initiali...
|
|
|
http://issues.apache.org/jira/browse/HDFS-2882
Author: Todd Lipcon,
2013-02-01, 19:29
|
|
|
[HDFS-3874] Exception when client reports bad checksum to NN - HDFS - [issue]
|
|
...We see the following exception in our logs on a cluster:2012-08-27 16:34:30,400 INFO org.apache.hadoop.hdfs.StateChange: *DIR* NameNode.reportBadBlocks2012-08-27 16:34:30,400 ERROR org.apach...
|
|
|
http://issues.apache.org/jira/browse/HDFS-3874
Author: Todd Lipcon,
2013-01-28, 18:41
|
|
|
[HDFS-4417] HDFS-347: fix case where local reads get disabled incorrectly - HDFS - [issue]
|
|
...In testing HDFS-347 against HBase (thanks Jean-Daniel Cryans) we ran into the following case: a workload is running which puts a bunch of local sockets in the PeerCache the workload abates f...
|
|
|
http://issues.apache.org/jira/browse/HDFS-4417
Author: Todd Lipcon,
2013-01-24, 20:24
|
|
|
[HDFS-4403] DFSClient can infer checksum type when not provided by reading first byte - HDFS - [issue]
|
|
...HDFS-3177 added the checksum type to OpBlockChecksumResponseProto, but the new protobuf field is optional, with a default of CRC32. This means that this API, when used against an older clust...
|
|
|
http://issues.apache.org/jira/browse/HDFS-4403
Author: Todd Lipcon,
2013-01-22, 14:04
|
|
|
[HDFS-4418] HDFS-347: increase default FileInputStreamCache size - HDFS - [issue]
|
|
...The FileInputStreamCache currently defaults to holding only 10 input stream pairs (corresponding to 10 blocks). In many HBase workloads, the region server will be issuing random reads agains...
|
|
|
http://issues.apache.org/jira/browse/HDFS-4418
Author: Todd Lipcon,
2013-01-17, 23:11
|
|
|
[HDFS-3429] DataNode reads checksums even if client does not need them - HDFS - [issue]
|
|
...Currently, even if the client does not want to verify checksums, the datanode reads them anyway and sends them over the wire. This means that performance improvements like HBase's applicatio...
|
|
|
http://issues.apache.org/jira/browse/HDFS-3429
Author: Todd Lipcon,
2013-01-15, 13:20
|
|
|
[HDFS-3677] dfs.namenode.edits.dir.required missing from hdfs-default.xml - HDFS - [issue]
|
|
...This config should be documented. It's useful for cases where the user would like to ensure that (eg) an NFS filer always has the most up-to-date edits....
|
|
|
http://issues.apache.org/jira/browse/HDFS-3677
Author: Todd Lipcon,
2012-12-28, 03:49
|
|
|
|
