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| <h2 title="Class RegionReplicaUtil" class="title">Class RegionReplicaUtil</h2> |
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| <pre>@InterfaceAudience.Private |
| public class <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.33">RegionReplicaUtil</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Utility methods which contain the logic for regions and replicas.</div> |
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| <tr class="altColor"> |
| <td class="colFirst"><code>protected static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#DEFAULT_REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH">DEFAULT_REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>(package private) static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#DEFAULT_REPLICA_ID">DEFAULT_REPLICA_ID</a></span></code> |
| <div class="block">The default replicaId for the region</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH_CONF_KEY">REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH_CONF_KEY</a></span></code> |
| <div class="block">Whether or not the secondary region will wait for observing a flush / region open event |
| from the primary region via async wal replication before enabling read requests.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#RegionReplicaUtil--">RegionReplicaUtil</a></span>()</code> </td> |
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| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#addReplicas-java.util.List-int-int-">addReplicas</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| int oldReplicaCount, |
| int newReplicaCount)</code> |
| <div class="block">Create any replicas for the regions (the default replicas that was already created is passed to |
| the method)</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private static int</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#compareRegionInfosWithoutReplicaId-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">compareRegionInfosWithoutReplicaId</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoA, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoB)</code> </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#getRegionInfoForDefaultReplica-org.apache.hadoop.hbase.client.RegionInfo-">getRegionInfoForDefaultReplica</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</code> |
| <div class="block">Returns the RegionInfo for the default replicaId (0).</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#getRegionInfoForReplica-org.apache.hadoop.hbase.client.RegionInfo-int-">getRegionInfoForReplica</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| int replicaId)</code> |
| <div class="block">Returns the RegionInfo for the given replicaId.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#isDefaultReplica-int-">isDefaultReplica</a></span>(int replicaId)</code> </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#isDefaultReplica-org.apache.hadoop.hbase.client.RegionInfo-">isDefaultReplica</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri)</code> </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#isReplicasForSameRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-">isReplicasForSameRegion</a></span>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoA, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoB)</code> </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/client/RegionReplicaUtil.html#removeNonDefaultRegions-java.util.Collection-">removeNonDefaultRegions</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</code> |
| <div class="block">Removes the non-default replicas from the passed regions collection</div> |
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| <h4>REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH_CONF_KEY</h4> |
| <pre>public static final <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.44">REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH_CONF_KEY</a></pre> |
| <div class="block">Whether or not the secondary region will wait for observing a flush / region open event |
| from the primary region via async wal replication before enabling read requests. Since replayed |
| edits from async wal replication from primary is not persisted in WAL, the memstore of the |
| secondary region might be non-empty at the time of close or crash. For ensuring seqId's not |
| "going back in time" in the secondary region replica, this should be enabled. However, in some |
| cases the above semantics might be ok for some application classes. |
| See HBASE-11580 for more context.</div> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
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| <pre>protected static final boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.46">DEFAULT_REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH</a></pre> |
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| <dd><a href="../../../../../constant-values.html#org.apache.hadoop.hbase.client.RegionReplicaUtil.DEFAULT_REGION_REPLICA_WAIT_FOR_PRIMARY_FLUSH">Constant Field Values</a></dd> |
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| <pre>static final int <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.51">DEFAULT_REPLICA_ID</a></pre> |
| <div class="block">The default replicaId for the region</div> |
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| <pre>public <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.33">RegionReplicaUtil</a>()</pre> |
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| <pre>public static <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.63">getRegionInfoForReplica</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo, |
| int replicaId)</pre> |
| <div class="block">Returns the RegionInfo for the given replicaId. |
| RegionInfo's correspond to a range of a table, but more than one |
| "instance" of the same range can be deployed which are differentiated by |
| the replicaId.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regionInfo</code> - </dd> |
| <dd><code>replicaId</code> - the replicaId to use</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an RegionInfo object corresponding to the same range (table, start and |
| end key), but for the given replicaId.</dd> |
| </dl> |
| </li> |
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| <pre>public static <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.77">getRegionInfoForDefaultReplica</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfo)</pre> |
| <div class="block">Returns the RegionInfo for the default replicaId (0). RegionInfo's correspond to |
| a range of a table, but more than one "instance" of the same range can be |
| deployed which are differentiated by the replicaId.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>an RegionInfo object corresponding to the same range (table, start and |
| end key), but for the default replicaId.</dd> |
| </dl> |
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| <pre>public static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.82">isDefaultReplica</a>(int replicaId)</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if this replicaId corresponds to default replica for the region</dd> |
| </dl> |
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| </ul> |
| <a name="isDefaultReplica-org.apache.hadoop.hbase.client.RegionInfo-"> |
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| <h4>isDefaultReplica</h4> |
| <pre>public static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.87">isDefaultReplica</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> hri)</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if this region is a default replica for the region</dd> |
| </dl> |
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| <h4>removeNonDefaultRegions</h4> |
| <pre>public static void <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.95">removeNonDefaultRegions</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions)</pre> |
| <div class="block">Removes the non-default replicas from the passed regions collection</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - </dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="isReplicasForSameRegion-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-"> |
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| <h4>isReplicasForSameRegion</h4> |
| <pre>public static boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.105">isReplicasForSameRegion</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoA, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoB)</pre> |
| </li> |
| </ul> |
| <a name="compareRegionInfosWithoutReplicaId-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.client.RegionInfo-"> |
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| <h4>compareRegionInfosWithoutReplicaId</h4> |
| <pre>private static int <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.109">compareRegionInfosWithoutReplicaId</a>(<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoA, |
| <a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> regionInfoB)</pre> |
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| <h4>addReplicas</h4> |
| <pre>public static <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> <a href="../../../../../src-html/org/apache/hadoop/hbase/client/RegionReplicaUtil.html#line.155">addReplicas</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>> regions, |
| int oldReplicaCount, |
| int newReplicaCount)</pre> |
| <div class="block">Create any replicas for the regions (the default replicas that was already created is passed to |
| the method)</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>regions</code> - existing regions</dd> |
| <dd><code>oldReplicaCount</code> - existing replica count</dd> |
| <dd><code>newReplicaCount</code> - updated replica count due to modify table</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the combined list of default and non-default replicas</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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