Github user ivakegg commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/93#discussion_r59746357
--- Diff:
server/base/src/main/java/org/apache/accumulo/server/master/balancer/HostRegexTableLoadBalancer.java
---
@@ -56,18 +61,24 @@
* <b>table.custom.balancer.host.regex.pool.check=5m</b><br>
* Regex matching can be based on either the host name (default) or host
ip address. To set this balancer to match the regular expressions to the tablet
server
* IP address, then set the following property:<br>
- * <b>table.custom.balancer.host.regex.is.ip=true</b>
+ * <b>table.custom.balancer.host.regex.is.ip=true</b><br>
+ * It's possible that this balancer may create a lot of migrations. To
limit the number of migrations that are created during a balance call, set the
following
+ * property (default 250):<br>
+ * <b>table.custom.balancer.host.regex.concurrent.migrations</b>
*
*/
-public class HostRegexTableLoadBalancer extends TableLoadBalancer {
+public class HostRegexTableLoadBalancer extends TableLoadBalancer
implements ConfigurationObserver {
private static final Logger LOG =
LoggerFactory.getLogger(HostRegexTableLoadBalancer.class);
public static final String HOST_BALANCER_PREFIX =
Property.TABLE_ARBITRARY_PROP_PREFIX.getKey() + "balancer.host.regex.";
- public static final String HOST_BALANCER_OOB_CHECK =
Property.TABLE_ARBITRARY_PROP_PREFIX.getKey() +
"balancer.host.regex.oob.period";
+ public static final String HOST_BALANCER_OOB_CHECK_KEY =
Property.TABLE_ARBITRARY_PROP_PREFIX.getKey() +
"balancer.host.regex.oob.period";
--- End diff --
How many oobs does a host balancer have to check? (in other words a more
obvious property name might be nice).
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