Github user ivakegg commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/253#discussion_r119166010
--- Diff:
server/base/src/main/java/org/apache/accumulo/server/fs/PerTableVolumeChooser.java
---
@@ -67,86 +69,67 @@ public String choose(VolumeChooserEnvironment env,
String[] options) throws Accu
return chooser.choose(env, options);
}
- private VolumeChooser getVolumeChooserForTable(VolumeChooserEnvironment
env, ServerConfigurationFactory localConf) {
+ private VolumeChooser getVolumeChooserForTable(VolumeChooserEnvironment
env, ServerConfigurationFactory localConf) throws AccumuloException {
VolumeChooser chooser;
if (log.isTraceEnabled()) {
log.trace("Table id: " + env.getTableId());
}
final TableConfiguration tableConf =
localConf.getTableConfiguration(env.getTableId());
String clazz = tableConf.get(Property.TABLE_VOLUME_CHOOSER);
- if (null == clazz || clazz.isEmpty()) {
- chooser = fallbackVolumeChooser;
- } else {
- chooser = tableSpecificChooser.get(env.getTableId());
- if (chooser == null) {
- VolumeChooser temp =
Property.createTableInstanceFromPropertyName(tableConf,
Property.TABLE_VOLUME_CHOOSER, VolumeChooser.class, fallbackVolumeChooser);
- chooser = tableSpecificChooser.putIfAbsent(env.getTableId(), temp);
- if (chooser == null) {
- chooser = temp;
- // Otherwise, someone else beat us to initializing; use theirs.
- }
- } else if (!(chooser.getClass().getName().equals(clazz))) {
- if (log.isTraceEnabled()) {
- log.trace("change detected for table id: " + env.getTableId());
- }
- // the configuration for this table's chooser has been updated. In
the case of failure to instantiate we'll repeat here next call.
- // TODO stricter definition of when the updated property is used,
ref ACCUMULO-3412
- VolumeChooser temp =
Property.createTableInstanceFromPropertyName(tableConf,
Property.TABLE_VOLUME_CHOOSER, VolumeChooser.class, fallbackVolumeChooser);
- VolumeChooser last =
tableSpecificChooser.replace(env.getTableId(), temp);
- if (chooser.equals(last)) {
- chooser = temp;
- } else {
- // Someone else beat us to updating; use theirs.
- chooser = last;
- }
- }
- }
- return chooser;
+
+ return createVolumeChooser(clazz,
Property.TABLE_VOLUME_CHOOSER.getKey(), env.getTableId(), tableSpecificChooser);
}
- private VolumeChooser
getVolumeChooserForNonTable(VolumeChooserEnvironment env,
ServerConfigurationFactory localConf) {
+ private VolumeChooser
getVolumeChooserForNonTable(VolumeChooserEnvironment env,
ServerConfigurationFactory localConf) throws AccumuloException {
VolumeChooser chooser;
- final String customProperty =
Property.GENERAL_ARBITRARY_PROP_PREFIX.getKey() + env.getScope() +
".volume.chooser";
+ String property = VOLUME_CHOOSER_SCOPED_KEY(env.getScope());
if (log.isTraceEnabled()) {
log.trace("Scope: " + env.getScope());
- log.trace("Looking up property: " + customProperty);
+ log.trace("Looking up property: " + property);
}
AccumuloConfiguration systemConfiguration =
localConf.getConfiguration();
- String clazz = systemConfiguration.get(customProperty);
+ String clazz = systemConfiguration.get(property);
+ // only if the custom property is not set to we fallback to the table
volumn chooser setting
+ if (null == clazz) {
--- End diff --
I like that idea. Perhaps in addition to table.volume.chooser we have a
tserver.nontable.volume.chooser. Any other thoughts as to the property name?
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