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The following commit(s) were added to refs/heads/master by this push:
new 690d3d2fb3 HDDS-9880. Elaborate OM VERSION file mismatch message.
(#5759)
690d3d2fb3 is described below
commit 690d3d2fb3d47628f48ac9bf8ee213a39b8fff6d
Author: Aryan Gupta <[email protected]>
AuthorDate: Fri Dec 15 14:20:43 2023 +0530
HDDS-9880. Elaborate OM VERSION file mismatch message. (#5759)
---
.../main/java/org/apache/hadoop/ozone/om/OMStorage.java | 15 ++++++++++++++-
1 file changed, 14 insertions(+), 1 deletion(-)
diff --git
a/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OMStorage.java
b/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OMStorage.java
index b5a2ba42fc..7f46d0dfac 100644
---
a/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OMStorage.java
+++
b/hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/OMStorage.java
@@ -53,7 +53,20 @@ public class OMStorage extends Storage {
static final String ERROR_OM_IS_ALREADY_INITIALIZED =
"OM is already initialized.";
static final String ERROR_UNEXPECTED_OM_NODE_ID_TEMPLATE =
- "OM NodeId: %s does not match existing nodeId from VERSION file: %s";
+ "Configured OM NodeId: %s does not match the existing nodeId in the " +
+ "VERSION file: %s.%n" + "One of the possible reasons may be, that " +
+ "previously an other OM was running on this host and some metadata was "
+
+ "left in the same directory that is configured for this OM instance as "
+
+ "metadata directory, or someone changed the associated OM id in " +
+ "the configuration.%n" + "Please carefully assess the configuration" +
+ " and the VERSION file in the metadata directory, and either change" +
+ " the configuration back, or remove the metadata directory, and " +
+ "re-initialize this Ozone Manager. (Changing the VERSION file is not" +
+ " a good approach, as the OM id is an integral part of the Raft " +
+ "metadata also.%n" + "Note that removing the metadata from the " +
+ "majority of Ozone Managers at once can lead to loosing the filesystem" +
+ " metadata, so take extra care if you do remove the metadata and that" +
+ " data is not a leftover from previous installations.%n";
static final String ERROR_STORAGE_NOT_INITIALIZED =
"OM Storage is not initialized yet.";
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