Revert "HDFS-14305. Fix serial number calculation in BlockTokenSecretManager to avoid token key ID overlap between NameNodes. Contributed by He Xiaoqiao."
This reverts commit 0feba4396f
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@ -65,17 +65,6 @@ public class BlockTokenSecretManager extends
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public static final Token<BlockTokenIdentifier> DUMMY_TOKEN = new Token<BlockTokenIdentifier>();
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/**
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* In order to prevent serial No. of different NameNode from overlapping,
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* Using 6 bits (identify 64=2^6 namenodes, and presuppose that no scenario
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* where deploy more than 64 namenodes (include ANN, SBN, Observers, etc.)
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* in one namespace) to identify index of NameNode, and the remainder 26 bits
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* auto-incr to change the serial No.
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*/
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@VisibleForTesting
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public static final int NUM_VALID_BITS = 26;
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private static final int LOW_MASK = (1 << NUM_VALID_BITS) - 1;
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private final boolean isMaster;
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/**
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@ -92,8 +81,8 @@ public class BlockTokenSecretManager extends
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private String blockPoolId;
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private final String encryptionAlgorithm;
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private final int nnIndex;
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private final int intRange;
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private final int nnRangeStart;
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private final boolean useProto;
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private final boolean shouldWrapQOP;
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@ -152,7 +141,8 @@ public class BlockTokenSecretManager extends
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private BlockTokenSecretManager(boolean isMaster, long keyUpdateInterval,
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long tokenLifetime, String blockPoolId, String encryptionAlgorithm,
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int nnIndex, int numNNs, boolean useProto, boolean shouldWrapQOP) {
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this.nnIndex = nnIndex;
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this.intRange = Integer.MAX_VALUE / numNNs;
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this.nnRangeStart = intRange * nnIndex;
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this.isMaster = isMaster;
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this.keyUpdateInterval = keyUpdateInterval;
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this.tokenLifetime = tokenLifetime;
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@ -167,7 +157,8 @@ public class BlockTokenSecretManager extends
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@VisibleForTesting
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public synchronized void setSerialNo(int serialNo) {
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this.serialNo = (serialNo & LOW_MASK) | (nnIndex << NUM_VALID_BITS);
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// we mod the serial number by the range and then add that times the index
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this.serialNo = (serialNo % intRange) + (nnRangeStart);
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}
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public void setBlockPoolId(String blockPoolId) {
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@ -116,36 +116,7 @@ public class TestFailoverWithBlockTokensEnabled {
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}
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}
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}
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@Test
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public void testSerialNumberMaskMatchIndex() {
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BlockTokenSecretManager btsm1 = cluster.getNamesystem(0).getBlockManager()
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.getBlockTokenSecretManager();
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BlockTokenSecretManager btsm2 = cluster.getNamesystem(1).getBlockManager()
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.getBlockTokenSecretManager();
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BlockTokenSecretManager btsm3 = cluster.getNamesystem(2).getBlockManager()
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.getBlockTokenSecretManager();
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int[] testSet = {0, Integer.MAX_VALUE, Integer.MIN_VALUE,
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Integer.MAX_VALUE / 2, Integer.MIN_VALUE / 2,
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Integer.MAX_VALUE / 3, Integer.MIN_VALUE / 3};
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for (int i = 0; i < testSet.length; i++) {
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setAndCheckHighBitsSerialNumber(testSet[i], btsm1, 0);
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setAndCheckHighBitsSerialNumber(testSet[i], btsm2, 1);
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setAndCheckHighBitsSerialNumber(testSet[i], btsm3, 2);
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}
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}
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/**
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* Check mask of serial number if equal to index of NameNode.
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*/
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private void setAndCheckHighBitsSerialNumber(int serialNumber,
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BlockTokenSecretManager btsm, int nnIndex) {
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btsm.setSerialNo(serialNumber);
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int serialNo = btsm.getSerialNoForTesting();
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int index = serialNo >> BlockTokenSecretManager.NUM_VALID_BITS;
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assertEquals(index, nnIndex);
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}
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@Test
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public void ensureInvalidBlockTokensAreRejected() throws IOException,
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URISyntaxException {
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