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HDDS-10859. Improve error messages when decommission and maintenance fail-early #6678

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May 16, 2024
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HDDS-10859. Improve error messages when decommission and maintenance fail-early #6678

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21 changes: 10 additions & 11 deletions ...dds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/node/NodeDecommissionManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -327,7 +327,6 @@ public synchronized List<DatanodeAdminError> decommissionNodes(
boolean decommissionPossible = checkIfDecommissionPossible(dns, errors);
if (!decommissionPossible) {
LOG.error("Cannot decommission nodes as sufficient node are not available.");
errors.add(new DatanodeAdminError("AllHosts", "Sufficient nodes are not available."));
return errors;
}
} else {
Expand Down Expand Up @@ -436,10 +435,11 @@ private synchronized boolean checkIfDecommissionPossible(List<DatanodeDetails> d
}
int reqNodes = cif.getReplicationConfig().getRequiredNodes();
if ((inServiceTotal - numDecom) < reqNodes) {
LOG.info("Cannot decommission nodes. Tried to decommission {} nodes of which valid nodes = {}. " +
"Cluster state: In-service nodes = {}, nodes required for replication = {}. " +
"Failing due to datanode : {}, container : {}",
dns.size(), numDecom, inServiceTotal, reqNodes, dn, cid);
String errorMsg = "Insufficient nodes. Tried to decommission " + dns.size() +
" nodes of which " + numDecom + " nodes were valid. Cluster has " + inServiceTotal +
" IN-SERVICE nodes, " + reqNodes + " of which are required for minimum replication. ";
LOG.info(errorMsg + "Failing due to datanode : {}, container : {}", dn, cid);
errors.add(new DatanodeAdminError("AllHosts", errorMsg));
return false;
}
}
Expand Down Expand Up @@ -495,7 +495,6 @@ public synchronized List<DatanodeAdminError> startMaintenanceNodes(
boolean maintenancePossible = checkIfMaintenancePossible(dns, errors);
if (!maintenancePossible) {
LOG.error("Cannot put nodes to maintenance as sufficient node are not available.");
errors.add(new DatanodeAdminError("AllHosts", "Sufficient nodes are not available."));
return errors;
}
} else {
Expand Down Expand Up @@ -600,11 +599,11 @@ private synchronized boolean checkIfMaintenancePossible(List<DatanodeDetails> dn
minInService = maintenanceReplicaMinimum;
}
if ((inServiceTotal - numMaintenance) < minInService) {
LOG.info("Cannot enter nodes into maintenance. Tried to start maintenance for {} nodes " +
"of which valid nodes = {}. " +
"Cluster state: In-service nodes = {}, nodes required for replication = {}. " +
"Failing due to datanode : {}, container : {}",
dns.size(), numMaintenance, inServiceTotal, minInService, dn, cid);
String errorMsg = "Insufficient nodes. Tried to start maintenance for " + dns.size() +
" nodes of which " + numMaintenance + " nodes were valid. Cluster has " + inServiceTotal +
" IN-SERVICE nodes, " + minInService + " of which are required for minimum replication. ";
LOG.info(errorMsg + "Failing due to datanode : {}, container : {}", dn, cid);
errors.add(new DatanodeAdminError("AllHosts", errorMsg));
return false;
}
}
Expand Down