[
https://issues.apache.org/jira/browse/HBASE-16183?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiang Li updated HBASE-16183:
-----------------------------
Description: (was: 1. In Section 89.3.3
change
{code}
String path = "hdfs://<namenode>:<port>/user/<hadoop-user>/coprocessor.jar";
{code}
into
{code}
Path path = new
Path("hdfs://bdavm1506.svl.ibm.com:8020/user/hbase/coprocessor.jar");
{code}
Reason:
The second parameter of HTableDescriptor.addCoprocessor() is
org.apache.hadoop.fs.Path, not String.
See
http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/HTableDescriptor.html
2. In Section 89.3.3
change
{code}
HBaseAdmin admin = new HBaseAdmin(conf);
{code}
into
{code}
Connection connection = ConnectionFactory.createConnection(conf);
Admin admin = connection.getAdmin();
{code}
Reason:
HBASE-12083 makes new HBaseAdmin() deprecated and the instance of Admin is
supposed to get from Connection.getAdmin()
Also see
http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/client/HBaseAdmin.html
3. In section 90.1
change
{code}
public void preGetOp(final ObserverContext e, final Get get, final List results)
{code}
into
{code}
public void preGetOp(final ObserverContext<RegionCoprocessorEnvironment> e,
final Get get, final List<Cell> results)
{code}
change
{code}
List kvs = new ArrayList(results.size());
{code}
into
{code}
List<Cell> kvs = new ArrayList<Cell>(results.size());
{code}
change
{code}
public RegionScanner preScannerOpen(final ObserverContext e, final Scan scan,
{code}
into
{code}
preScannerOpen(final ObserverContext<RegionCoprocessorEnvironment> e, final
Scan scan，
{code}
change
{code}
public boolean postScannerNext(final ObserverContext e, final InternalScanner
s, final List results, final int limit, final boolean hasMore) throws
IOException {
{code}
into
{code}
public boolean postScannerNext(final
ObserverContext<RegionCoprocessorEnvironment> e, final InternalScanner s, final
List<Result> results, final int limit, final boolean hasMore) throws
IOException {
{code}
change
{code}
Iterator iterator = results.iterator();
{code}
into
{code}
Iterator<Result> iterator = results.iterator();
{code}
Reason:
Generic
4. In section 90.1
change
{code}
preGet(e, get, kvs);
{code}
into
{code}
super.preGetOp(e, get, kvs);
{code}
Reason:
There is not a function called preGet() provided by BaseRegionObserver or its
super class/interface. I believe we need to call preGetOp() of the super class
of RegionObserverExample here.
5. In section 90.1
change
{code}
kvs.add(KeyValueUtil.ensureKeyValue(c));
{code}
into
{code}
kvs.add(c);
{code}
Reason:
KeyValueUtil.ensureKeyValue() is deprecated.
See
http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/KeyValueUtil.html
and https://issues.apache.org/jira/browse/HBASE-12079)
> Correct errors in example program of coprocessor in Ref Guide
> -------------------------------------------------------------
>
> Key: HBASE-16183
> URL: https://issues.apache.org/jira/browse/HBASE-16183
> Project: HBase
> Issue Type: Bug
> Components: documentation
> Reporter: Xiang Li
> Assignee: Xiang Li
> Priority: Minor
> Attachments: HBASE-16183.patch
>
>
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