jojochuang commented on a change in pull request #2782:
URL: https://github.com/apache/hadoop/pull/2782#discussion_r597418628
##########
File path:
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@@ -2603,6 +2603,24 @@ public long
requestBlockReportLeaseId(DatanodeRegistration nodeReg) {
LOG.warn("Failed to find datanode {}", nodeReg);
return 0;
}
+
+ // During safemode, DataNodes are only allowed to report all data once.
+ if (namesystem.isInStartupSafeMode()) {
+ boolean allReported = true;
+ for (DatanodeStorageInfo storageInfo : node.getStorageInfos()) {
+ if (storageInfo.getBlockReportCount() < 1) {
+ allReported = false;
+ break;
+ }
+ }
+
+ if (allReported) {
+ LOG.info("The DataNode has reported all blocks and does not need " +
Review comment:
nit: print datanode id/ip/address would be helpful here.
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