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[HADOOP-11624] Prevent fail-over during client shutdown - Hadoop - [issue]
...We've seen a HBase RS hanging during shutdown. It turns out the ipc client was throwing java.nio.channels.ClosedByInterruptException during the shutdown. Then the HA failover retry logic the...
http://issues.apache.org/jira/browse/HADOOP-11624    Author: Kihwal Lee, 2015-02-23, 17:30
[HDFS-7822] Make webhdfs handling of URI stardard compliant - HDFS - [issue]
...As seen in HDFS-7816, webhdfs client is not encoding URI properly. But since webhdfs is often used as the compatibility layer, we cannot simply fix it and break the compatibility. Instead, w...
http://issues.apache.org/jira/browse/HDFS-7822    Author: Kihwal Lee, 2015-02-23, 15:43
[HDFS-7788] Post-2.6 namenode may not start up with an image containing inodes created with an old release. - HDFS - [issue]
...Before HDFS-4305, which was fixed in 2.1.0-beta, clients could specify arbitrarily small preferred block size for a file including 0. This was normally done by faulty clients or failed creat...
http://issues.apache.org/jira/browse/HDFS-7788    Author: Kihwal Lee, 2015-02-22, 15:25
[HDFS-7809] Block and lease recovery failure caused by snapshot issue - HDFS - [issue]
...On a cluster running 2.5, we have observed a decommissioning failure due to a file that had been under construction for 3 days.  It turned out that the file was abandoned and a lease re...
http://issues.apache.org/jira/browse/HDFS-7809    Author: Kihwal Lee, 2015-02-18, 20:39
[HDFS-5796] The file system browser in the namenode UI requires SPNEGO. - HDFS - [issue]
...After HDFS-5382, the browser makes webhdfs REST calls directly, requiring SPNEGO to work between user's browser and namenode.  This won't work if the cluster's security infrastructure i...
http://issues.apache.org/jira/browse/HDFS-5796    Author: Kihwal Lee, 2015-02-18, 18:09
[HDFS-7795] Show warning if not all favored nodes were chosen by namenode - HDFS - [issue]
...Namenode may not choose all of fovored nodes specified by a client. In that case, it will be nice if a relevant message is shown to the client....
http://issues.apache.org/jira/browse/HDFS-7795    Author: Kihwal Lee, 2015-02-18, 15:30
[HADOOP-11518] Prefix-based per-RPC server configuration - Hadoop - [issue]
...If a process runs multiple RPC servers, there is no way to individually set their IPC parameters beyond what's supported by the RPC Builder.  If a configuration is shared among many nod...
http://issues.apache.org/jira/browse/HADOOP-11518    Author: Kihwal Lee, 2015-02-11, 22:24
[HDFS-7587] Edit log corruption can happen if append fails with a quota violation - HDFS - [issue]
...We have seen a standby namenode crashing due to edit log corruption. It was complaining that OP_CLOSE cannot be applied because the file is not under-construction.When a client was trying to...
http://issues.apache.org/jira/browse/HDFS-7587    Author: Kihwal Lee, 2015-02-05, 23:22
[HADOOP-9436] NetgroupCache does not refresh membership correctly - Hadoop - [issue]
...NetgroupCache is used to get around the problem of inability to obtain a single user-to-groups mapping from netgroup. For example, the ACL code pre-populates this cache, so that any user-gro...
http://issues.apache.org/jira/browse/HADOOP-9436    Author: Kihwal Lee, 2015-02-05, 17:51
[expand - 1 more] - Erratic Jenkins behavior - HDFS - [mail # dev]
...I am sure many of us have seen strange jenkins behavior out of the precommit builds. - build artifacts missing- serving build artifact belonging to another build. This also causes wrong prec...
   Author: Kihwal Lee, 2015-02-05, 17:50
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB