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HDFS-6493. Change dfs.namenode.startup.delay.block.deletion to second instead of millisecond. Contributed by Juan Yu. 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1607733 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Andrew Wang 2014-07-03 20:02:46 +00:00
parent 7cb89369bb
commit 3470a34c22
6 changed files with 23 additions and 7 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -256,6 +256,9 @@ Release 2.5.0 - UNRELEASED
HDFS-6620. Snapshot docs should specify about preserve options with cp command
(Stephen Chu via umamahesh)
HDFS-6493. Change dfs.namenode.startup.delay.block.deletion to second
instead of millisecond. (Juan Yu via wang)
OPTIMIZATIONS
HDFS-6214. Webhdfs has poor throughput for files >2GB (daryn)

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -252,8 +252,8 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final long DFS_NAMENODE_PATH_BASED_CACHE_REFRESH_INTERVAL_MS_DEFAULT = 30000L;
/** Pending period of block deletion since NameNode startup */
public static final String DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_KEY = "dfs.namenode.startup.delay.block.deletion.ms";
public static final long DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_DEFAULT = 0L;
public static final String DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_KEY = "dfs.namenode.startup.delay.block.deletion.sec";
public static final long DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_DEFAULT = 0L;
// Whether to enable datanode's stale state detection and usage for reads
public static final String DFS_NAMENODE_AVOID_STALE_DATANODE_FOR_READ_KEY = "dfs.namenode.avoid.read.stale.datanode";

4
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
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@ -263,8 +263,8 @@ public class BlockManager {
heartbeatManager = datanodeManager.getHeartbeatManager();
final long pendingPeriod = conf.getLong(
DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_KEY,
DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_DEFAULT);
DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_KEY,
DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_DEFAULT) * 1000L;
invalidateBlocks = new InvalidateBlocks(
datanodeManager.blockInvalidateLimit, pendingPeriod);

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/InvalidateBlocks.java
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@ -34,6 +34,7 @@ import org.apache.hadoop.hdfs.protocol.DatanodeInfo;
import org.apache.hadoop.hdfs.server.namenode.NameNode;
import org.apache.hadoop.hdfs.util.LightWeightHashSet;
import org.apache.hadoop.util.Time;
import org.apache.hadoop.hdfs.DFSUtil;
import com.google.common.annotations.VisibleForTesting;
@ -67,8 +68,8 @@ class InvalidateBlocks {
}
private void printBlockDeletionTime(final Log log) {
log.info(DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_KEY
+ " is set to " + pendingPeriodInMs + " ms.");
log.info(DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_KEY
+ " is set to " + DFSUtil.durationToString(pendingPeriodInMs));
SimpleDateFormat sdf = new SimpleDateFormat("yyyy MMM dd HH:mm:ss");
Calendar calendar = new GregorianCalendar();
calendar.add(Calendar.SECOND, (int) (this.pendingPeriodInMs / 1000));

12
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -1996,4 +1996,16 @@
</description>
</property>
<property>
<name>dfs.namenode.startup.delay.block.deletion.sec</name>
<value>0</value>
<description>The delay in seconds at which we will pause the blocks deletion
after Namenode startup. By default it's disabled.
In the case a directory has large number of directories and files are
deleted, suggested delay is one hour to give the administrator enough time
to notice large number of pending deletion blocks and take corrective
action.
</description>
</property>
</configuration>

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestPendingInvalidateBlock.java
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@ -55,7 +55,7 @@ public class TestPendingInvalidateBlock {
conf = new Configuration();
conf.setLong(DFSConfigKeys.DFS_BLOCK_SIZE_KEY, BLOCKSIZE);
// block deletion pending period
conf.setLong(DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_MS_KEY, 1000 * 5);
conf.setLong(DFSConfigKeys.DFS_NAMENODE_STARTUP_DELAY_BLOCK_DELETION_SEC_KEY, 5L);
// set the block report interval to 2s
conf.setLong(DFSConfigKeys.DFS_BLOCKREPORT_INTERVAL_MSEC_KEY, 2000);
conf.setLong(DFSConfigKeys.DFS_HEARTBEAT_INTERVAL_KEY, 1);