Github user yufeldman commented on a diff in the pull request:
https://github.com/apache/drill/pull/474#discussion_r59297387
--- Diff:
common/src/main/java/org/apache/drill/common/util/DrillVersionInfo.java ---
@@ -49,10 +53,52 @@ public static String getVersion() {
}
}
} catch (IOException except) {
- appVersion = "Unknown";
+ appVersion = UNKNOWN_VERSION;
}
return appVersion;
}
+ /**
+ * Compare two Drill versions disregarding build number and comparing
only major and minor versions.
+ * Versions are considered to be compatible:
+ * 1. if current version is the same as version to compare.
+ * 2. if current version minor version + 1 is the same as version to
compare.
+ */
+ public static boolean isVersionsCompatible(String currentVersion, String
versionToCompare) {
+ if (currentVersion != null && currentVersion.equals(versionToCompare))
{
+ return true;
+ }
+
+ BigDecimal currentVersionDecimal = getVersionAsDecimal(currentVersion);
+ BigDecimal versionToCompareDecimal =
getVersionAsDecimal(versionToCompare);
+
+ if (currentVersionDecimal != null && versionToCompareDecimal != null) {
--- End diff --
So for Drillbit with version 1.6 Drillbit with version 1.7 will be
included, while for a Drillbit with version 1.7 Drillbit with version 1.6 will
not be included? Does it mean that at any particular time a particular
Drillbit will have different view on the cluster from some other Drillbit?
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