@Override // DatanodeProtocol
public DatanodeCommand blockReport(DatanodeRegistration nodeReg, String poolId, long[] blocks)
throws IOException {
verifyRequest(nodeReg);
BlockListAsLongs blist = new BlockListAsLongs(blocks);
if (stateChangeLog.isDebugEnabled()) {
stateChangeLog.debug(
"*BLOCK* NameNode.blockReport: "
+ "from "
+ nodeReg.getName()
+ " "
+ blist.getNumberOfBlocks()
+ " blocks");
}
namesystem.getBlockManager().processReport(nodeReg, poolId, blist);
if (nn.getFSImage().isUpgradeFinalized()) return new DatanodeCommand.Finalize(poolId);
return null;
}
private void verifySoftwareVersion(DatanodeRegistration dnReg) throws IncorrectVersionException {
String dnVersion = dnReg.getSoftwareVersion();
if (VersionUtil.compareVersions(dnVersion, minimumDataNodeVersion) < 0) {
IncorrectVersionException ive =
new IncorrectVersionException(minimumDataNodeVersion, dnVersion, "DataNode", "NameNode");
LOG.warn(ive.getMessage() + " DN: " + dnReg);
throw ive;
}
String nnVersion = VersionInfo.getVersion();
if (!dnVersion.equals(nnVersion)) {
String messagePrefix =
"Reported DataNode version '"
+ dnVersion
+ "' of DN "
+ dnReg
+ " does not match NameNode version '"
+ nnVersion
+ "'";
long nnCTime = nn.getFSImage().getStorage().getCTime();
long dnCTime = dnReg.getStorageInfo().getCTime();
if (nnCTime != dnCTime) {
IncorrectVersionException ive =
new IncorrectVersionException(
messagePrefix
+ " and CTime of DN ('"
+ dnCTime
+ "') does not match CTime of NN ('"
+ nnCTime
+ "')");
LOG.warn(ive);
throw ive;
} else {
LOG.info(messagePrefix + ". Note: This is normal during a rolling upgrade.");
}
}
}