Apache
/
hadoop
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HDFS-14465. When the Block expected replications is larger than the number of DataNodes, entering maintenance will never exit. Contributed by Yicong Cai.

This commit is contained in:
Wei-Chiu Chuang 2019-06-20 19:36:44 -07:00
parent a68de43957
commit f876e82abc
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeAdminManager.java
View File

@ -349,7 +349,7 @@ public class DatanodeAdminManager {
* @return true if sufficient, else false.
*/
private boolean isSufficientlyReplicated(BlockInfo block, BlockCollection bc,
NumberReplicas numberReplicas, boolean isDecommission) {
NumberReplicas numberReplicas, boolean isDecommission, boolean isMaintenance) {
if (blockManager.hasEnoughEffectiveReplicas(block, numberReplicas, 0)) {
// Block has enough replica, skip
LOG.trace("Block {} does not need replication.", block);
@ -382,6 +382,10 @@ public class DatanodeAdminManager {
}
}
}
if (isMaintenance && numLive >= blockManager.getMinReplicationToBeInMaintenance()) {
return true;
}
return false;
}
@ -726,6 +730,7 @@ public class DatanodeAdminManager {
// Schedule under-replicated blocks for replication if not already
// pending
boolean isDecommission = datanode.isDecommissionInProgress();
boolean isMaintenance = datanode.isEnteringMaintenance();
boolean neededReplication = isDecommission ?
blockManager.isNeededReplication(block, num) :
blockManager.isNeededReplicationForMaintenance(block, num);
@ -743,7 +748,7 @@ public class DatanodeAdminManager {
// Even if the block is under-replicated,
// it doesn't block decommission if it's sufficiently replicated
if (isSufficientlyReplicated(block, bc, num, isDecommission)) {
if (isSufficientlyReplicated(block, bc, num, isDecommission, isMaintenance)) {
if (pruneSufficientlyReplicated) {
it.remove();
}

1
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestMaintenanceState.java
View File

@ -373,6 +373,7 @@ public class TestMaintenanceState extends AdminStatesBaseTest {
testExpectedReplication(2);
testExpectedReplication(3);
testExpectedReplication(4);
testExpectedReplication(10);
}
private void testExpectedReplication(int replicationFactor)