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HBASE-26057 Remove reflections used to access Hadoop 2 API in FanOutOneBlockAsyncDFSOutputHelper (#3448) 

Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Michael Stack <stack@apache.org>
This commit is contained in:
Wei-Chiu Chuang 2021-07-02 02:01:53 -07:00 committed by GitHub
parent 82c44b49f5
commit 5ef5e64010
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 2 additions and 45 deletions
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hbase-asyncfs/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java
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@ -139,15 +139,6 @@ public final class FanOutOneBlockAsyncDFSOutputHelper {
private static final LeaseManager LEASE_MANAGER;
// This is used to terminate a recoverFileLease call when FileSystem is already closed.
// isClientRunning is not public so we need to use reflection.
private interface DFSClientAdaptor {
boolean isClientRunning(DFSClient client);
}
private static final DFSClientAdaptor DFS_CLIENT_ADAPTOR;
// helper class for creating files.
private interface FileCreator {
default HdfsFileStatus create(ClientProtocol instance, String src, FsPermission masked,
@ -173,22 +164,6 @@ public final class FanOutOneBlockAsyncDFSOutputHelper {
private static final FileCreator FILE_CREATOR;
private static DFSClientAdaptor createDFSClientAdaptor() throws NoSuchMethodException {
Method isClientRunningMethod = DFSClient.class.getDeclaredMethod("isClientRunning");
isClientRunningMethod.setAccessible(true);
return new DFSClientAdaptor() {
@Override
public boolean isClientRunning(DFSClient client) {
try {
return (Boolean) isClientRunningMethod.invoke(client);
} catch (IllegalAccessException | InvocationTargetException e) {
throw new RuntimeException(e);
}
}
};
}
private static LeaseManager createLeaseManager() throws NoSuchMethodException {
Method beginFileLeaseMethod =
DFSClient.class.getDeclaredMethod("beginFileLease", long.class, DFSOutputStream.class);
@ -241,18 +216,6 @@ public final class FanOutOneBlockAsyncDFSOutputHelper {
};
}
private static FileCreator createFileCreator2() throws NoSuchMethodException {
Method createMethod = ClientProtocol.class.getMethod("create", String.class, FsPermission.class,
String.class, EnumSetWritable.class, boolean.class, short.class, long.class,
CryptoProtocolVersion[].class);
return (instance, src, masked, clientName, flag, createParent, replication, blockSize,
supportedVersions) -> {
return (HdfsFileStatus) createMethod.invoke(instance, src, masked, clientName, flag,
createParent, replication, blockSize, supportedVersions);
};
}
private static FileCreator createFileCreator() throws NoSuchMethodException {
try {
return createFileCreator3_3();
@ -260,12 +223,7 @@ public final class FanOutOneBlockAsyncDFSOutputHelper {
LOG.debug("ClientProtocol::create wrong number of arguments, should be hadoop 3.2 or below");
}
try {
return createFileCreator3();
} catch (NoSuchMethodException e) {
LOG.debug("ClientProtocol::create wrong number of arguments, should be hadoop 2.x");
}
return createFileCreator2();
}
// cancel the processing if DFSClient is already closed.
@ -279,14 +237,13 @@ public final class FanOutOneBlockAsyncDFSOutputHelper {
@Override
public boolean progress() {
return DFS_CLIENT_ADAPTOR.isClientRunning(client);
return client.isClientRunning();
}
}
static {
try {
LEASE_MANAGER = createLeaseManager();
DFS_CLIENT_ADAPTOR = createDFSClientAdaptor();
FILE_CREATOR = createFileCreator();
} catch (Exception e) {
String msg = "Couldn't properly initialize access to HDFS internals. Please " +