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Posted to commits@accumulo.apache.org by el...@apache.org on 2014/05/28 22:51:49 UTC
[16/32] git commit: Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT
Conflicts:
core/src/main/java/org/apache/accumulo/core/conf/Property.java
Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/480634fe
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/480634fe
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/480634fe
Branch: refs/heads/ACCUMULO-378
Commit: 480634fe4a8edfeb9f35613f1518bd742012b3d9
Parents: ff3ad73 2526f0a
Author: Josh Elser <el...@apache.org>
Authored: Fri May 23 16:32:22 2014 -0400
Committer: Josh Elser <el...@apache.org>
Committed: Fri May 23 16:32:22 2014 -0400
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core/src/main/java/org/apache/accumulo/core/conf/Property.java | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
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http://git-wip-us.apache.org/repos/asf/accumulo/blob/480634fe/core/src/main/java/org/apache/accumulo/core/conf/Property.java
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diff --cc core/src/main/java/org/apache/accumulo/core/conf/Property.java
index 2ade366,d8f9beb..87a29fb
--- a/core/src/main/java/org/apache/accumulo/core/conf/Property.java
+++ b/core/src/main/java/org/apache/accumulo/core/conf/Property.java
@@@ -267,14 -206,15 +267,15 @@@ public enum Property
"Use the SYNC_BLOCK create flag to sync WAL writes to disk. Prevents problems recovering from sudden system resets."),
TSERV_WAL_SYNC_METHOD("tserver.wal.sync.method", "hsync", PropertyType.STRING, "The method to invoke when sync'ing WALs. HSync will provide " +
"resiliency in the face of unexpected power outages, at the cost of speed. If method is not available, the legacy 'sync' method " +
- "will be used to ensure backwards compatibility with older Hadoop versions"),
-
+ "will be used to ensure backwards compatibility with older Hadoop versions. A value of 'hflush' is the alternative to the default value " +
+ "of 'hsync' which will result in faster writes, but with less durability"),
-
++
// properties that are specific to logger server behavior
LOGGER_PREFIX("logger.", null, PropertyType.PREFIX, "Properties in this category affect the behavior of the write-ahead logger servers"),
- LOGGER_DIR("logger.dir.walog", "walogs", PropertyType.PATH,
- "The property only needs to be set if upgrading from 1.4 which used to store write-ahead logs on the local filesystem. In 1.5 write-ahead logs are "
- + "stored in DFS. When 1.5 is started for the first time it will copy any 1.4 write ahead logs into DFS. It is possible to specify a "
- + "comma-separated list of directories."),
+ LOGGER_DIR("logger.dir.walog", "walogs", PropertyType.PATH, "This property is only needed if Accumulo was upgraded from a 1.4 or earlier version. "
+ + "In the upgrade to 1.5 this property is used to copy any earlier write ahead logs into DFS. "
+ + "In 1.6+, this property is used by the LocalWALRecovery utility in the event that something went wrong with that earlier upgrade. "
+ + "It is possible to specify a comma-separated list of directories."),
// accumulo garbage collector properties
GC_PREFIX("gc.", null, PropertyType.PREFIX, "Properties in this category affect the behavior of the accumulo garbage collector."),