accumulo-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From els...@apache.org
Subject svn commit: r1660226 - /accumulo/site/trunk/content/release_notes/1.6.2.mdtext
Date Mon, 16 Feb 2015 22:13:56 GMT
Author: elserj
Date: Mon Feb 16 22:13:56 2015
New Revision: 1660226

URL: http://svn.apache.org/r1660226
Log:
First pass of notable bugs done

Modified:
    accumulo/site/trunk/content/release_notes/1.6.2.mdtext

Modified: accumulo/site/trunk/content/release_notes/1.6.2.mdtext
URL: http://svn.apache.org/viewvc/accumulo/site/trunk/content/release_notes/1.6.2.mdtext?rev=1660226&r1=1660225&r2=1660226&view=diff
==============================================================================
--- accumulo/site/trunk/content/release_notes/1.6.2.mdtext (original)
+++ accumulo/site/trunk/content/release_notes/1.6.2.mdtext Mon Feb 16 22:13:56 2015
@@ -89,6 +89,35 @@ data stored in Accumulo using the broken
         // ...
       }
 
+### Reduce MiniAccumuloCluster failures due to random port allocations
+
+`MiniAccumuloCluster` has had issues where it fails to properly start due to the way it attempts
to choose
+a random, unbound port on the local machine to start the ZooKeeper and Accumulo processes.
Improvements have
+been made, including retry logic, to withstand a few failed port choices. The changes made
by [ACCUMULO-3233][12]
+and the related issues should eliminate sporadic failures users of `MiniAccumuloCluster`
might have observed.
+
+### Tracer doesn't handle trace table state transition
+
+The Tracer is an optional Accumulo server process that serializes Spans, elements of a distributed
trace,
+to the trace table for later inspection and correlation with other Spans. By default, the
Tracer writes
+to a "trace" table. In earlier versions of Accumulo, if this table was put offline, the Tracer
would fail
+to write new Spans to the table when it came back online. [ACCUMULO-3351][13] ensures that
the Tracer process
+will resume writing Spans to the trace table when it transitions to online after being offline.
+
+### Tablet not major compacting
+
+It was noticed that a system performing many bulk imports, there was a tablet with hundreds
of files which
+was not major compacting nor was scheduled to be major compacted. [ACCUMULO-3462][14] identified
as fix
+server-side which would prevent this from happening in the future.
+
+### YARN job submission fails with Hadoop-2.6.0
+
+Hadoop 2.6.0 introduced a new component, the TimelineServer, which is a centralized metrics
service designed
+for other Hadoop components to leverage. MapReduce jobs submitted via `accumulo` and `tool.sh`
failed to
+run the job because it attempted to contact the TimelineServer and Accumulo was missing a
dependency on 
+the classpath to communicate with the TimelineServer. [ACCUMULO-3230][15] updates the classpath
in the example
+configuration files to include the necessary dependencies for the TimelineServer to ensure
that YARN job
+submission operates as previously.
 
 ## Performance Improvements
 
@@ -150,4 +179,8 @@ and, in HDFS High-Availability instances
 [8]: https://issues.apache.org/jira/browse/ACCUMULO-3301
 [9]: https://issues.apache.org/jira/browse/ACCUMULO-3217
 [10]: https://issues.apache.org/jira/browse/ACCUMULO-3372
-[11]: https://issues.apache.org/jira/browse/ACCUMULO-3385
\ No newline at end of file
+[11]: https://issues.apache.org/jira/browse/ACCUMULO-3385
+[12]: https://issues.apache.org/jira/browse/ACCUMULO-3233
+[13]: https://issues.apache.org/jira/browse/ACCUMULO-3351
+[14]: https://issues.apache.org/jira/browse/ACCUMULO-3462
+[15]: https://issues.apache.org/jira/browse/ACCUMULO-3230
\ No newline at end of file



Mime
View raw message