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[HDFS-2717] BookKeeper Journal output stream doesn't check addComplete rc - HDFS - [issue]
...As summary says, we're not checking the addComplete return code, so there's a change of losing update....
http://issues.apache.org/jira/browse/HDFS-2717    Author: Ivan Kelly, 2014-09-04, 01:59
[HDFS-3474] Cleanup Exception handling in BookKeeper journal manager - HDFS - [issue]
...There are a couple of instance of:try {  ...} catch (Exception e) {  ...}We should be catching the specific exceptions....
http://issues.apache.org/jira/browse/HDFS-3474    Author: Ivan Kelly, 2014-09-04, 01:59
[HDFS-4265] BKJM doesn't take advantage of speculative reads - HDFS - [issue]
...BookKeeperEditLogInputStream reads entry at a time, so it doesn't take advantage of the speculative read mechanism introduced by BOOKKEEPER-336....
http://issues.apache.org/jira/browse/HDFS-4265    Author: Ivan Kelly, 2014-07-25, 11:03
[HDFS-4266] BKJM: Separate write and ack quorum - HDFS - [issue]
...BOOKKEEPER-208 allows the ack and write quorums to be different sizes to allow writes to be unaffected by any bookie failure. BKJM should be able to take advantage of this....
http://issues.apache.org/jira/browse/HDFS-4266    Author: Ivan Kelly, 2014-07-18, 15:11
[HDFS-4154] BKJM: Two namenodes usng bkjm can race to create the version znode - HDFS - [issue]
...nd one will get the following error.2012-11-06 10:04:00,200 INFO hidden.bkjournal.org.apache.zookeeper.ClientCnxn: Session establishment complete on server 109-231-69-172.flexiscale.com/109....
http://issues.apache.org/jira/browse/HDFS-4154    Author: Ivan Kelly, 2014-07-17, 15:00
[HDFS-3810] Implement format() for BKJM - HDFS - [issue]
...At the moment, formatting for BKJM is done on initialization. Reinitializing is a manual process. This JIRA is to implement the JournalManager#format API, so that BKJM can be formatting alon...
http://issues.apache.org/jira/browse/HDFS-3810    Author: Ivan Kelly, 2014-07-10, 15:55
[HDFS-3789] JournalManager#format() should be able to throw IOException - HDFS - [issue]
...Currently JournalManager#format cannot throw any exception. As format can fail, we should be able to propogate this failure upwards. Otherwise, format will fail silently, and the admin will ...
http://issues.apache.org/jira/browse/HDFS-3789    Author: Ivan Kelly, 2012-10-31, 14:01
[HDFS-3809] Make BKJM use protobufs for all serialization with ZK - HDFS - [issue]
...HDFS uses protobufs for serialization in many places. Protobufs allow fields to be added without breaking bc or requiring new parsing code to be written. For this reason, we should use them ...
http://issues.apache.org/jira/browse/HDFS-3809    Author: Ivan Kelly, 2012-10-31, 14:01
Re: Ask for help? - HDFS - [mail # dev]
...On Wed, Oct 24, 2012 at 02:44:45PM +0000, Xiaohan wrote: How many bookies are you using? Are any of the bookies displaying disk errors? what does iostat say on the bookies and on the namenod...
   Author: Ivan Kelly, 2012-10-24, 15:10
[HDFS-2333] HDFS-2284 introduced 2 findbugs warnings on trunk - HDFS - [issue]
...When HDFS-2284 was submitted it made DFSOutputStream public which triggered two SC_START_IN_CTOR findbug warnings....
http://issues.apache.org/jira/browse/HDFS-2333    Author: Ivan Kelly, 2012-09-12, 03:06
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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