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| <div class="subTitle">org.apache.hadoop.hbase.master.snapshot</div> |
| <h2 title="Class MasterSnapshotVerifier" class="title">Class MasterSnapshotVerifier</h2> |
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| <div class="contentContainer"> |
| <ul class="inheritance"> |
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| <li> |
| <ul class="inheritance"> |
| <li>org.apache.hadoop.hbase.master.snapshot.MasterSnapshotVerifier</li> |
| </ul> |
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| <div class="description"> |
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| <pre>@InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public final class <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.79">MasterSnapshotVerifier</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">General snapshot verification on the master. |
| <p> |
| This is a light-weight verification mechanism for all the files in a snapshot. It doesn't |
| attempt to verify that the files are exact copies (that would be paramount to taking the |
| snapshot again!), but instead just attempts to ensure that the files match the expected |
| files and are the same length. |
| <p> |
| Taking an online snapshots can race against other operations and this is an last line of |
| defense. For example, if meta changes between when snapshots are taken not all regions of a |
| table may be present. This can be caused by a region split (daughters present on this scan, |
| but snapshot took parent), or move (snapshots only checks lists of region servers, a move could |
| have caused a region to be skipped or done twice). |
| <p> |
| Current snapshot files checked: |
| <ol> |
| <li>SnapshotDescription is readable</li> |
| <li>Table info is readable</li> |
| <li>Regions</li> |
| </ol> |
| <ul> |
| <li>Matching regions in the snapshot as currently in the table</li> |
| <li><a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client"><code>RegionInfo</code></a> matches the current and stored regions</li> |
| <li>All referenced hfiles have valid names</li> |
| <li>All the hfiles are present (either in .archive directory in the region)</li> |
| <li>All recovered.edits files are present (by name) and have the correct file size</li> |
| </ul></div> |
| </li> |
| </ul> |
| </div> |
| <div class="summary"> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private static org.slf4j.Logger</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#LOG">LOG</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#services">services</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#snapshot">snapshot</a></span></code> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>private <a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#tableName">tableName</a></span></code> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>private org.apache.hadoop.fs.FileSystem</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#workingDirFs">workingDirFs</a></span></code> </td> |
| </tr> |
| </table> |
| </li> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colOne" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#MasterSnapshotVerifier-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription-org.apache.hadoop.fs.FileSystem-">MasterSnapshotVerifier</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> services, |
| org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription snapshot, |
| org.apache.hadoop.fs.FileSystem workingDirFs)</code> </td> |
| </tr> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#verifyRegionInfo-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest-">verifyRegionInfo</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest manifest)</code> |
| <div class="block">Verify that the regionInfo is valid</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#verifyRegions-org.apache.hadoop.hbase.snapshot.SnapshotManifest-">verifyRegions</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest)</code> |
| <div class="block">Check that all the regions in the snapshot are valid, and accounted for.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#verifySnapshot-org.apache.hadoop.fs.Path-java.util.Set-">verifySnapshot</a></span>(org.apache.hadoop.fs.Path snapshotDir, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<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>> snapshotServers)</code> |
| <div class="block">Verify that the snapshot in the directory is a valid snapshot</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#verifySnapshotDescription-org.apache.hadoop.fs.Path-">verifySnapshotDescription</a></span>(org.apache.hadoop.fs.Path snapshotDir)</code> |
| <div class="block">Check that the snapshot description written in the filesystem matches the current snapshot</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>private void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#verifyTableInfo-org.apache.hadoop.hbase.snapshot.SnapshotManifest-">verifyTableInfo</a></span>(<a href="../../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest)</code> |
| <div class="block">Check that the table descriptor for the snapshot is a valid table descriptor</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.<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></h3> |
| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <h3>Field Detail</h3> |
| <a name="LOG"> |
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| </a> |
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| <h4>LOG</h4> |
| <pre>private static final org.slf4j.Logger <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.80">LOG</a></pre> |
| </li> |
| </ul> |
| <a name="snapshot"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>snapshot</h4> |
| <pre>private org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.82">snapshot</a></pre> |
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| <h4>workingDirFs</h4> |
| <pre>private org.apache.hadoop.fs.FileSystem <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.83">workingDirFs</a></pre> |
| </li> |
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| <a name="tableName"> |
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| </a> |
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| <li class="blockList"> |
| <h4>tableName</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/TableName.html" title="class in org.apache.hadoop.hbase">TableName</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.84">tableName</a></pre> |
| </li> |
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| <a name="services"> |
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| <li class="blockList"> |
| <h4>services</h4> |
| <pre>private <a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.85">services</a></pre> |
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| </a> |
| <h3>Constructor Detail</h3> |
| <a name="MasterSnapshotVerifier-org.apache.hadoop.hbase.master.MasterServices-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription-org.apache.hadoop.fs.FileSystem-"> |
| <!-- --> |
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| <h4>MasterSnapshotVerifier</h4> |
| <pre>public <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.92">MasterSnapshotVerifier</a>(<a href="../../../../../../org/apache/hadoop/hbase/master/MasterServices.html" title="interface in org.apache.hadoop.hbase.master">MasterServices</a> services, |
| org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotDescription snapshot, |
| org.apache.hadoop.fs.FileSystem workingDirFs)</pre> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>services</code> - services for the master</dd> |
| <dd><code>snapshot</code> - snapshot to check</dd> |
| <dd><code>workingDirFs</code> - the file system containing the temporary snapshot information</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
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| <h3>Method Detail</h3> |
| <a name="verifySnapshot-org.apache.hadoop.fs.Path-java.util.Set-"> |
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| </a> |
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| <li class="blockList"> |
| <h4>verifySnapshot</h4> |
| <pre>public void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.108">verifySnapshot</a>(org.apache.hadoop.fs.Path snapshotDir, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Set.html?is-external=true" title="class or interface in java.util">Set</a><<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>> snapshotServers) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/snapshot/CorruptedSnapshotException.html" title="class in org.apache.hadoop.hbase.snapshot">CorruptedSnapshotException</a>, |
| <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Verify that the snapshot in the directory is a valid snapshot</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>snapshotDir</code> - snapshot directory to check</dd> |
| <dd><code>snapshotServers</code> - <a href="../../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase"><code>ServerName</code></a> of the servers |
| that are involved in the snapshot</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/snapshot/CorruptedSnapshotException.html" title="class in org.apache.hadoop.hbase.snapshot">CorruptedSnapshotException</a></code> - if the snapshot is invalid</dd> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if there is an unexpected connection issue to the filesystem</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="verifySnapshotDescription-org.apache.hadoop.fs.Path-"> |
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| </a> |
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| <h4>verifySnapshotDescription</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.126">verifySnapshotDescription</a>(org.apache.hadoop.fs.Path snapshotDir) |
| throws <a href="../../../../../../org/apache/hadoop/hbase/snapshot/CorruptedSnapshotException.html" title="class in org.apache.hadoop.hbase.snapshot">CorruptedSnapshotException</a></pre> |
| <div class="block">Check that the snapshot description written in the filesystem matches the current snapshot</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>snapshotDir</code> - snapshot directory to check</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../../../../org/apache/hadoop/hbase/snapshot/CorruptedSnapshotException.html" title="class in org.apache.hadoop.hbase.snapshot">CorruptedSnapshotException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="verifyTableInfo-org.apache.hadoop.hbase.snapshot.SnapshotManifest-"> |
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| <h4>verifyTableInfo</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.140">verifyTableInfo</a>(<a href="../../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Check that the table descriptor for the snapshot is a valid table descriptor</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>manifest</code> - snapshot manifest to inspect</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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| <a name="verifyRegions-org.apache.hadoop.hbase.snapshot.SnapshotManifest-"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>verifyRegions</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.159">verifyRegions</a>(<a href="../../../../../../org/apache/hadoop/hbase/snapshot/SnapshotManifest.html" title="class in org.apache.hadoop.hbase.snapshot">SnapshotManifest</a> manifest) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Check that all the regions in the snapshot are valid, and accounted for.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>manifest</code> - snapshot manifest to inspect</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - if we can't reach hbase:meta or read the files from the FS</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="verifyRegionInfo-org.apache.hadoop.hbase.client.RegionInfo-org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest-"> |
| <!-- --> |
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| <ul class="blockListLast"> |
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| <h4>verifyRegionInfo</h4> |
| <pre>private void <a href="../../../../../../src-html/org/apache/hadoop/hbase/master/snapshot/MasterSnapshotVerifier.html#line.220">verifyRegionInfo</a>(<a href="../../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a> region, |
| org.apache.hadoop.hbase.shaded.protobuf.generated.SnapshotProtos.SnapshotRegionManifest manifest) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Verify that the regionInfo is valid</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>region</code> - the region to check</dd> |
| <dd><code>manifest</code> - snapshot manifest to inspect</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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