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https://issues.apache.org/jira/browse/HDFS-13099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16355112#comment-16355112
]
Yiqun Lin commented on HDFS-13099:
----------------------------------
Looks like the change for impl class broken the unit tests.
{noformat}
2018-02-07 04:43:43,016 [main] ERROR impl.StateStoreZooKeeperImpl
(StateStoreZooKeeperImpl.java:initDriver(85)) - Cannot initialize the ZK
connection
java.io.IOException: hadoop.zk.address is not configured.
at
org.apache.hadoop.util.curator.ZKCuratorManager.start(ZKCuratorManager.java:128)
at
org.apache.hadoop.util.curator.ZKCuratorManager.start(ZKCuratorManager.java:115)
at
org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreZooKeeperImpl.initDriver(StateStoreZooKeeperImpl.java:83)
at
org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreDriver.init(StateStoreDriver.java:74)
at
org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreSerializableImpl.init(StateStoreSerializableImpl.java:47)
{noformat}
This seems a incompatible change. Attach the update patch.
> RBF: Use the ZooKeeper as the default State Store
> -------------------------------------------------
>
> Key: HDFS-13099
> URL: https://issues.apache.org/jira/browse/HDFS-13099
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: documentation
> Affects Versions: 3.0.0
> Reporter: Yiqun Lin
> Assignee: Yiqun Lin
> Priority: Minor
> Attachments: HDFS-13099.001.patch, HDFS-13099.002.patch,
> HDFS-13099.003.patch, HDFS-13099.004.patch
>
>
> Currently the State Store Driver relevant settings only written in its
> implement classes.
> {noformat}
> public class StateStoreZooKeeperImpl extends StateStoreSerializableImpl {
> ...
> /** Configuration keys. */
> public static final String FEDERATION_STORE_ZK_DRIVER_PREFIX =
> DFSConfigKeys.FEDERATION_STORE_PREFIX + "driver.zk.";
> public static final String FEDERATION_STORE_ZK_PARENT_PATH =
> FEDERATION_STORE_ZK_DRIVER_PREFIX + "parent-path";
> public static final String FEDERATION_STORE_ZK_PARENT_PATH_DEFAULT =
> "/hdfs-federation";
> ..
> {noformat}
> Actually, they should be moved into class {{DFSConfigKeys}} and documented in
> file {{hdfs-default.xml}}. This will help more users know these settings and
> know how to use.
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