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Re: [Federation setup] Adding a new name node to federated cluster - HDFS - [mail # dev]
...You might be issuing the refresh command against the dataXfer port, not the rpc port of the datanode.-Kihwal      From: Ajith shetty  To: "[EMAIL PROTECTED]"  &...
   Author: Kihwal Lee, 2015-04-02, 16:32
[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, 2015-03-30, 21:50
[HDFS-6599] 2.4 addBlock is 10 to 20 times slower compared to 0.23 - HDFS - [issue]
...From one of our busiest 0.23 clusters:"AddBlockAvgTime" : 0.9514711501719515"CreateAvgTime" : 1.7564162389174"CompleteAvgTime" : 1.3310406035056548"BlockReceivedAndDeletedAvgTime" : 0.661210...
http://issues.apache.org/jira/browse/HDFS-6599    Author: Kihwal Lee, 2015-03-20, 18:19
[HDFS-7932] Speed up the shutdown of datanode during rolling upgrade - HDFS - [issue]
...Datanode normally exits in 3 seconds after receiving shutdownDatanode command. However, sometimes it doesn't, especially when the IO is busy....
http://issues.apache.org/jira/browse/HDFS-7932    Author: Kihwal Lee, 2015-03-20, 15:27
[HDFS-7894] Rolling upgrade readiness is not updated in jmx until query command is issued. - HDFS - [issue]
...When a hdfs rolling upgrade is started and a rollback image is created/uploaded, the active NN does not update its rollingUpgradeInfo until it receives a query command via RPC. This results ...
http://issues.apache.org/jira/browse/HDFS-7894    Author: Kihwal Lee, 2015-03-19, 16:24
[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, 2015-03-19, 15:23
[HDFS-5522] Datanode disk error check may be incorrectly skipped - HDFS - [issue]
...After HDFS-4581 and HDFS-4699, checkDiskError() is not called when network errors occur during processing data node requests.  This appears to create problems when a disk is having prob...
http://issues.apache.org/jira/browse/HDFS-5522    Author: Kihwal Lee, 2015-03-17, 05:24
[expand - 1 more] - Re: Questions about HDFS federation - HDFS - [mail # dev]
...Federation is for sharing the data node storage spaces, not for sharing the data among multiple clusters. Check out viewfs instead.      From: xeonmailinglist-yahoo  ...
   Author: Kihwal Lee, 2015-03-03, 19:14
[HDFS-3717] Test cases in TestPBHelper fail - HDFS - [issue]
...org.apache.hadoop.hdfs.protocolPB.TestPBHelper.testConvertBlockCommandorg.apache.hadoop.hdfs.protocolPB.TestPBHelper.testConvertLocatedBlockorg.apache.hadoop.hdfs.protocolPB.TestPBHelper.tes...
http://issues.apache.org/jira/browse/HDFS-3717    Author: Kihwal Lee, 2015-03-02, 16:56
[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
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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