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HDFS-16817. Remove useless DataNode lock related configuration (#5072) 

Reviewed-by: litao <tomleescut@gmail.com>
Signed-off-by: ZanderXu <zanderxu@apache.org>
This commit is contained in:
huhaiyang 2022-10-27 17:28:19 +08:00 committed by GitHub
parent 545a556883
commit d26c35b228
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2 changed files with 0 additions and 32 deletions
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8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
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@ -636,14 +636,6 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final String DFS_DATANODE_LOCK_FAIR_KEY =
"dfs.datanode.lock.fair";
public static final boolean DFS_DATANODE_LOCK_FAIR_DEFAULT = true;
public static final String DFS_DATANODE_LOCK_READ_WRITE_ENABLED_KEY =
"dfs.datanode.lock.read.write.enabled";
public static final Boolean DFS_DATANODE_LOCK_READ_WRITE_ENABLED_DEFAULT =
true;
public static final String DFS_DATANODE_LOCK_REPORTING_THRESHOLD_MS_KEY =
"dfs.datanode.lock-reporting-threshold-ms";
public static final long
DFS_DATANODE_LOCK_REPORTING_THRESHOLD_MS_DEFAULT = 300L;
public static final String DFS_UPGRADE_DOMAIN_FACTOR = "dfs.namenode.upgrade.domain.factor";
public static final int DFS_UPGRADE_DOMAIN_FACTOR_DEFAULT = DFS_REPLICATION_DEFAULT;

24
hadoop-hdfs-project/hadoop-hdfs/src/main/resources/hdfs-default.xml
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@ -3465,30 +3465,6 @@
</description>
</property>
<property>
<name>dfs.datanode.lock.read.write.enabled</name>
<value>true</value>
<description>If this is true, the FsDataset lock will be a read write lock. If
it is false, all locks will be a write lock.
Enabling this should give better datanode throughput, as many read only
functions can run concurrently under the read lock, when they would
previously have required the exclusive write lock. As the feature is
experimental, this switch can be used to disable the shared read lock, and
cause all lock acquisitions to use the exclusive write lock.
</description>
</property>
<property>
<name>dfs.datanode.lock-reporting-threshold-ms</name>
<value>300</value>
<description>When thread waits to obtain a lock, or a thread holds a lock for
more than the threshold, a log message will be written. Note that
dfs.lock.suppress.warning.interval ensures a single log message is
emitted per interval for waiting threads and a single message for holding
threads to avoid excessive logging.
</description>
</property>
<property>
<name>dfs.namenode.startup.delay.block.deletion.sec</name>
<value>0</value>