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https://issues.apache.org/jira/browse/HDFS-16718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18036022#comment-18036022
]
ASF GitHub Bot commented on HDFS-16718:
---------------------------------------
github-actions[bot] closed pull request #4708: HDFS-16718. Improve Code with
Lambda in org.apache.hadoop.hdfs.server.datanode packages
URL: https://github.com/apache/hadoop/pull/4708
> 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
> Priority: Major
> Labels: pull-request-available
>
> 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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