ZanderXu created HDFS-16718:
-------------------------------
Summary: Improve Code with Lambda in
org.apahce.hadoop.hdfs.server.datanode packages
Key: HDFS-16718
URL: https://issues.apache.org/jira/browse/HDFS-16718
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: ZanderXu
Assignee: ZanderXu
Improve Code with Lambda in org.apahce.hadoop.hdfs.server.datanode packages.
For example:
Current logic:
{code:java}
synchronized void startAll() throws IOException {
try {
UserGroupInformation.getLoginUser().doAs(
new PrivilegedExceptionAction<Object>() {
@Override
public Object run() throws Exception {
for (BPOfferService bpos : offerServices) {
bpos.start();
}
return null;
}
});
} catch (InterruptedException ex) {
IOException ioe = new IOException();
ioe.initCause(ex.getCause());
throw ioe;
}
}{code}
Improved Code with Lambda:
{code:java}
synchronized void startAll() throws IOException {
try {
UserGroupInformation.getLoginUser().doAs(
(PrivilegedExceptionAction<Object>) () -> {
for (BPOfferService bpos : offerServices) {
bpos.start();
}
return null;
});
} catch (InterruptedException ex) {
IOException ioe = new IOException();
ioe.initCause(ex.getCause());
throw ioe;
}
}{code}
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