HDFS-12915. Fix findbugs warning in INodeFile$HeaderFormat.getBlockLayoutRedundancy. (Contributed by Chris Douglas)
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@ -33,10 +33,11 @@ import java.util.List;
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import java.util.Set;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.fs.permission.PermissionStatus;
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import org.apache.hadoop.fs.StorageType;
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import org.apache.hadoop.fs.permission.PermissionStatus;
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import org.apache.hadoop.hdfs.protocol.Block;
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import org.apache.hadoop.hdfs.protocol.BlockStoragePolicy;
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import org.apache.hadoop.hdfs.protocol.BlockType;
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import org.apache.hadoop.hdfs.protocol.ErasureCodingPolicy;
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import org.apache.hadoop.hdfs.protocol.HdfsConstants;
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import org.apache.hadoop.hdfs.protocol.QuotaExceededException;
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@ -45,7 +46,6 @@ import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfo;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockInfoStriped;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockManager;
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import org.apache.hadoop.hdfs.server.blockmanagement.BlockStoragePolicySuite;
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import org.apache.hadoop.hdfs.protocol.BlockType;
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import org.apache.hadoop.hdfs.server.blockmanagement.DatanodeStorageInfo;
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import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.BlockUCState;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.FileDiff;
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@ -53,11 +53,11 @@ import org.apache.hadoop.hdfs.server.namenode.snapshot.FileDiffList;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.FileWithSnapshotFeature;
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import org.apache.hadoop.hdfs.server.namenode.snapshot.Snapshot;
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import org.apache.hadoop.hdfs.util.LongBitFormat;
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import org.apache.hadoop.util.StringUtils;
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import static org.apache.hadoop.io.erasurecode.ErasureCodeConstants.REPLICATION_POLICY_ID;
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import com.google.common.annotations.VisibleForTesting;
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import com.google.common.base.Preconditions;
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import org.apache.hadoop.io.erasurecode.ErasureCodeConstants;
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import org.apache.hadoop.util.StringUtils;
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/** I-node for closed file. */
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@InterfaceAudience.Private
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@ -186,28 +186,49 @@ public class INodeFile extends INodeWithAdditionalFields
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* Construct block layout redundancy based on the given BlockType,
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* replication factor and EC PolicyID.
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*/
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static long getBlockLayoutRedundancy(final BlockType blockType,
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final Short replication, final Byte erasureCodingPolicyID) {
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long layoutRedundancy = 0;
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if (blockType == STRIPED) {
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Preconditions.checkArgument(replication == null &&
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erasureCodingPolicyID != null);
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Preconditions.checkArgument(ErasureCodingPolicyManager.getInstance()
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.getByID(erasureCodingPolicyID) != null,
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"Could not find EC policy with ID 0x" + StringUtils
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.byteToHexString(erasureCodingPolicyID));
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static long getBlockLayoutRedundancy(BlockType blockType,
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Short replication, Byte erasureCodingPolicyID) {
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if (null == erasureCodingPolicyID) {
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erasureCodingPolicyID = REPLICATION_POLICY_ID;
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}
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long layoutRedundancy = 0xFF & erasureCodingPolicyID;
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switch (blockType) {
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case STRIPED:
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if (replication != null) {
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throw new IllegalArgumentException(
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"Illegal replication for STRIPED block type");
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}
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if (erasureCodingPolicyID == REPLICATION_POLICY_ID) {
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throw new IllegalArgumentException(
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"Illegal REPLICATION policy for STRIPED block type");
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}
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if (null == ErasureCodingPolicyManager.getInstance()
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.getByID(erasureCodingPolicyID)) {
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throw new IllegalArgumentException(String.format(
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"Could not find EC policy with ID 0x%02x",
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erasureCodingPolicyID));
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}
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// valid parameters for STRIPED
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layoutRedundancy |= BLOCK_TYPE_MASK_STRIPED;
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// Following bitwise OR with signed byte erasureCodingPolicyID is safe
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// as the PolicyID can never be in negative.
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layoutRedundancy |= erasureCodingPolicyID;
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} else {
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Preconditions.checkArgument(erasureCodingPolicyID == null ||
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erasureCodingPolicyID ==
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ErasureCodeConstants.REPLICATION_POLICY_ID);
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Preconditions.checkArgument(replication != null && replication >= 0 &&
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replication <= MAX_REDUNDANCY,
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"Invalid replication value " + replication);
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break;
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case CONTIGUOUS:
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if (erasureCodingPolicyID != REPLICATION_POLICY_ID) {
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throw new IllegalArgumentException(String.format(
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"Illegal EC policy 0x%02x for CONTIGUOUS block type",
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erasureCodingPolicyID));
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}
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if (null == replication ||
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replication < 0 || replication > MAX_REDUNDANCY) {
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throw new IllegalArgumentException("Invalid replication value "
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+ replication);
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}
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// valid parameters for CONTIGUOUS
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layoutRedundancy |= replication;
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break;
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default:
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throw new IllegalArgumentException("Unknown blockType: " + blockType);
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}
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return layoutRedundancy;
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}
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@ -599,7 +620,7 @@ public class INodeFile extends INodeWithAdditionalFields
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if (isStriped()) {
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return HeaderFormat.getECPolicyID(header);
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}
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return ErasureCodeConstants.REPLICATION_POLICY_ID;
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return REPLICATION_POLICY_ID;
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}
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/**
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