DomGarguilo commented on a change in pull request #2426:
URL: https://github.com/apache/accumulo/pull/2426#discussion_r789943249
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File path:
server/manager/src/main/java/org/apache/accumulo/manager/upgrade/Upgrader9to10.java
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@@ -111,6 +111,31 @@
* {@link #dropSortedMapWALFiles(ServerContext)}. For more information see the
following issues:
* <a href="https://github.com/apache/accumulo/issues/2117";>#2117</a> and
* <a href="https://github.com/apache/accumulo/issues/2179";>#2179</a>
+ *
+ * The following methods were created for External compactions:
+ * {@link #createExternalCompactionNodes(ServerContext)}, {@link
#setMetaTableProps(ServerContext)}
+ *
+ * Improvements to the metadata and root tables were made in this version. See
pull request
+ * <a href="https://github.com/apache/accumulo/pull/1174";>#1174</a> for more
details. The
+ * {@link #upgradeRootTabletMetadata(ServerContext)} method was added for this
change. This change
+ * allowed other changes to how volumes were stored in the metadata and have
Accumulo always call
+ * the volume chooser for new tablet files. This change was facilitated with
the
+ * {@link #upgradeDirColumns(ServerContext, Ample.DataLevel)} method and done
in
+ * <a href="https://github.com/apache/accumulo/pull/1389";>#1389</a>
+ *
+ * The method {@link #upgradeRelativePaths(ServerContext, Ample.DataLevel)}
was added for resolving
+ * and replacing all relative tablet file paths found in metadata tables with
absolute paths during
+ * upgrade. Absolute paths are resolved by prefixing relative paths with a
volume configured by the
+ * user in a the instance.volumes.upgrade.relative property, which is only
used during an upgrade.
Review comment:
```suggestion
* user in the instance.volumes.upgrade.relative property, which is only
used during an upgrade.
```
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