You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@hbase.apache.org by gi...@apache.org on 2018/07/04 14:51:13 UTC
[09/31] hbase-site git commit: Published site at
3e7f724837e35f41153bc3059e8ac507583a9200.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/624dc6ea/devapidocs/src-html/org/apache/hadoop/hbase/util/CommonFSUtils.StreamCapabilities.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/util/CommonFSUtils.StreamCapabilities.html b/devapidocs/src-html/org/apache/hadoop/hbase/util/CommonFSUtils.StreamCapabilities.html
index 65be929..6b83bf9 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/util/CommonFSUtils.StreamCapabilities.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/util/CommonFSUtils.StreamCapabilities.html
@@ -462,87 +462,87 @@
<span class="sourceLineNo">454</span> new Path(namespace)));<a name="line.454"></a>
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-<span class="sourceLineNo">487</span> // this mapping means that under a federated FileSystem implementation, we'll<a name="line.487"></a>
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-<span class="sourceLineNo">493</span> /**<a name="line.493"></a>
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-<span class="sourceLineNo">520</span> LOG.trace("We were passed an empty storagePolicy, exiting early.");<a name="line.520"></a>
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+<span class="sourceLineNo">462</span><a name="line.462"></a>
+<span class="sourceLineNo">463</span> /**<a name="line.463"></a>
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+<span class="sourceLineNo">474</span> * @param path the Path whose storage policy is to be set<a name="line.474"></a>
+<span class="sourceLineNo">475</span> * @param storagePolicy Policy to set on <code>path</code>; see hadoop 2.6+<a name="line.475"></a>
+<span class="sourceLineNo">476</span> * org.apache.hadoop.hdfs.protocol.HdfsConstants for possible list e.g<a name="line.476"></a>
+<span class="sourceLineNo">477</span> * 'COLD', 'WARM', 'HOT', 'ONE_SSD', 'ALL_SSD', 'LAZY_PERSIST'.<a name="line.477"></a>
+<span class="sourceLineNo">478</span> */<a name="line.478"></a>
+<span class="sourceLineNo">479</span> public static void setStoragePolicy(final FileSystem fs, final Path path,<a name="line.479"></a>
+<span class="sourceLineNo">480</span> final String storagePolicy) {<a name="line.480"></a>
+<span class="sourceLineNo">481</span> try {<a name="line.481"></a>
+<span class="sourceLineNo">482</span> setStoragePolicy(fs, path, storagePolicy, false);<a name="line.482"></a>
+<span class="sourceLineNo">483</span> } catch (IOException e) {<a name="line.483"></a>
+<span class="sourceLineNo">484</span> // should never arrive here<a name="line.484"></a>
+<span class="sourceLineNo">485</span> LOG.warn("We have chosen not to throw exception but some unexpectedly thrown out", e);<a name="line.485"></a>
+<span class="sourceLineNo">486</span> }<a name="line.486"></a>
+<span class="sourceLineNo">487</span> }<a name="line.487"></a>
+<span class="sourceLineNo">488</span><a name="line.488"></a>
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+<span class="sourceLineNo">490</span> boolean throwException) throws IOException {<a name="line.490"></a>
+<span class="sourceLineNo">491</span> if (storagePolicy == null) {<a name="line.491"></a>
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+<span class="sourceLineNo">493</span> LOG.trace("We were passed a null storagePolicy, exiting early.");<a name="line.493"></a>
+<span class="sourceLineNo">494</span> }<a name="line.494"></a>
+<span class="sourceLineNo">495</span> return;<a name="line.495"></a>
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+<span class="sourceLineNo">499</span> if (LOG.isTraceEnabled()) {<a name="line.499"></a>
+<span class="sourceLineNo">500</span> LOG.trace("We were passed an empty storagePolicy, exiting early.");<a name="line.500"></a>
+<span class="sourceLineNo">501</span> }<a name="line.501"></a>
+<span class="sourceLineNo">502</span> return;<a name="line.502"></a>
+<span class="sourceLineNo">503</span> } else {<a name="line.503"></a>
+<span class="sourceLineNo">504</span> trimmedStoragePolicy = trimmedStoragePolicy.toUpperCase(Locale.ROOT);<a name="line.504"></a>
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+<span class="sourceLineNo">508</span> LOG.trace("We were passed the defer-to-hdfs policy {}, exiting early.",<a name="line.508"></a>
+<span class="sourceLineNo">509</span> trimmedStoragePolicy);<a name="line.509"></a>
+<span class="sourceLineNo">510</span> }<a name="line.510"></a>
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+<span class="sourceLineNo">513</span> try {<a name="line.513"></a>
+<span class="sourceLineNo">514</span> invokeSetStoragePolicy(fs, path, trimmedStoragePolicy);<a name="line.514"></a>
+<span class="sourceLineNo">515</span> } catch (IOException e) {<a name="line.515"></a>
+<span class="sourceLineNo">516</span> if (LOG.isTraceEnabled()) {<a name="line.516"></a>
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+<span class="sourceLineNo">518</span> }<a name="line.518"></a>
+<span class="sourceLineNo">519</span> if (throwException) {<a name="line.519"></a>
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+<span class="sourceLineNo">527</span> */<a name="line.527"></a>
+<span class="sourceLineNo">528</span> private static void invokeSetStoragePolicy(final FileSystem fs, final Path path,<a name="line.528"></a>
+<span class="sourceLineNo">529</span> final String storagePolicy) throws IOException {<a name="line.529"></a>
+<span class="sourceLineNo">530</span> Method m = null;<a name="line.530"></a>
+<span class="sourceLineNo">531</span> Exception toThrow = null;<a name="line.531"></a>
+<span class="sourceLineNo">532</span> try {<a name="line.532"></a>
+<span class="sourceLineNo">533</span> m = fs.getClass().getDeclaredMethod("setStoragePolicy",<a name="line.533"></a>
+<span class="sourceLineNo">534</span> new Class<?>[] { Path.class, String.class });<a name="line.534"></a>
+<span class="sourceLineNo">535</span> m.setAccessible(true);<a name="line.535"></a>
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<span class="sourceLineNo">538</span> final String msg = "FileSystem doesn't support setStoragePolicy; HDFS-6584, HDFS-9345 " +<a name="line.538"></a>
<span class="sourceLineNo">539</span> "not available. This is normal and expected on earlier Hadoop versions.";<a name="line.539"></a>
<span class="sourceLineNo">540</span> if (!warningMap.containsKey(fs)) {<a name="line.540"></a>
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<span class="sourceLineNo">546</span> m = null;<a name="line.546"></a>
<span class="sourceLineNo">547</span> } catch (SecurityException e) {<a name="line.547"></a>
-<span class="sourceLineNo">548</span> final String msg = "No access to setStoragePolicy on FileSystem from the SecurityManager; " +<a name="line.548"></a>
-<span class="sourceLineNo">549</span> "HDFS-6584, HDFS-9345 not available. This is unusual and probably warrants an email " +<a name="line.549"></a>
-<span class="sourceLineNo">550</span> "to the user@hbase mailing list. Please be sure to include a link to your configs, and " +<a name="line.550"></a>
-<span class="sourceLineNo">551</span> "logs that include this message and period of time before it. Logs around service " +<a name="line.551"></a>
-<span class="sourceLineNo">552</span> "start up will probably be useful as well.";<a name="line.552"></a>
-<span class="sourceLineNo">553</span> if (!warningMap.containsKey(fs)) {<a name="line.553"></a>
-<span class="sourceLineNo">554</span> warningMap.put(fs, true);<a name="line.554"></a>
-<span class="sourceLineNo">555</span> LOG.warn(msg, e);<a name="line.555"></a>
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-<span class="sourceLineNo">557</span> LOG.debug(msg, e);<a name="line.557"></a>
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-<span class="sourceLineNo">559</span> m = null; // could happen on setAccessible() or getDeclaredMethod()<a name="line.559"></a>
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-<span class="sourceLineNo">561</span> if (m != null) {<a name="line.561"></a>
-<span class="sourceLineNo">562</span> try {<a name="line.562"></a>
-<span class="sourceLineNo">563</span> m.invoke(fs, path, storagePolicy);<a name="line.563"></a>
-<span class="sourceLineNo">564</span> if (LOG.isDebugEnabled()) {<a name="line.564"></a>
-<span class="sourceLineNo">565</span> LOG.debug("Set storagePolicy=" + storagePolicy + " for path=" + path);<a name="line.565"></a>
-<span class="sourceLineNo">566</span> }<a name="line.566"></a>
-<span class="sourceLineNo">567</span> } catch (Exception e) {<a name="line.567"></a>
-<span class="sourceLineNo">568</span> // This swallows FNFE, should we be throwing it? seems more likely to indicate dev<a name="line.568"></a>
-<span class="sourceLineNo">569</span> // misuse than a runtime problem with HDFS.<a name="line.569"></a>
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-<span class="sourceLineNo">571</span> warningMap.put(fs, true);<a name="line.571"></a>
-<span class="sourceLineNo">572</span> LOG.warn("Unable to set storagePolicy=" + storagePolicy + " for path=" + path + ". " +<a name="line.572"></a>
-<span class="sourceLineNo">573</span> "DEBUG log level might have more details.", e);<a name="line.573"></a>
-<span class="sourceLineNo">574</span> } else if (LOG.isDebugEnabled()) {<a name="line.574"></a>
-<span class="sourceLineNo">575</span> LOG.debug("Unable to set storagePolicy=" + storagePolicy + " for path=" + path, e);<a name="line.575"></a>
-<span class="sourceLineNo">576</span> }<a name="line.576"></a>
-<span class="sourceLineNo">577</span> // check for lack of HDFS-7228<a name="line.577"></a>
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-<span class="sourceLineNo">583</span> if (LOG.isDebugEnabled()) {<a name="line.583"></a>
-<span class="sourceLineNo">584</span> LOG.debug("Given storage policy, '" +storagePolicy +"', was rejected and probably " +<a name="line.584"></a>
-<span class="sourceLineNo">585</span> "isn't a valid policy for the version of Hadoop you're running. I.e. if you're " +<a name="line.585"></a>
-<span class="sourceLineNo">586</span> "trying to use SSD related policies then you're likely missing HDFS-7228. For " +<a name="line.586"></a>
-<span class="sourceLineNo">587</span> "more information see the 'ArchivalStorage' docs for your Hadoop release.");<a name="line.587"></a>
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-<span class="sourceLineNo">592</span> if (LOG.isDebugEnabled()) {<a name="line.592"></a>
-<span class="sourceLineNo">593</span> LOG.debug("The underlying FileSystem implementation doesn't support " +<a name="line.593"></a>
-<span class="sourceLineNo">594</span> "setStoragePolicy. This is probably intentional on their part, since HDFS-9345 " +<a name="line.594"></a>
-<span class="sourceLineNo">595</span> "appears to be present in your version of Hadoop. For more information check " +<a name="line.595"></a>
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+<span class="sourceLineNo">748</span> throws IOException {<a name="line.748"></a>
+<span class="sourceLineNo">749</span> LOG.debug("File system contents for path " + root);<a name="line.749"></a>
+<span class="sourceLineNo">750</span> logFSTree(LOG, fs, root, "|-");<a name="line.750"></a>
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+<span class="sourceLineNo">752</span><a name="line.752"></a>
+<span class="sourceLineNo">753</span> /**<a name="line.753"></a>
+<span class="sourceLineNo">754</span> * Recursive helper to log the state of the FS<a name="line.754"></a>
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+<span class="sourceLineNo">757</span> */<a name="line.757"></a>
+<span class="sourceLineNo">758</span> private static void logFSTree(Logger LOG, final FileSystem fs, final Path root, String prefix)<a name="line.758"></a>
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+<span class="sourceLineNo">760</span> FileStatus[] files = listStatus(fs, root, null);<a name="line.760"></a>
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+<span class="sourceLineNo">764</span><a name="line.764"></a>
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+<span class="sourceLineNo">767</span> LOG.debug(prefix + file.getPath().getName() + "/");<a name="line.767"></a>
+<span class="sourceLineNo">768</span> logFSTree(LOG, fs, file.getPath(), prefix + "---");<a name="line.768"></a>
+<span class="sourceLineNo">769</span> } else {<a name="line.769"></a>
+<span class="sourceLineNo">770</span> LOG.debug(prefix + file.getPath().getName());<a name="line.770"></a>
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+<span class="sourceLineNo">772</span> }<a name="line.772"></a>
+<span class="sourceLineNo">773</span> }<a name="line.773"></a>
+<span class="sourceLineNo">774</span><a name="line.774"></a>
+<span class="sourceLineNo">775</span> public static boolean renameAndSetModifyTime(final FileSystem fs, final Path src, final Path dest)<a name="line.775"></a>
+<span class="sourceLineNo">776</span> throws IOException {<a name="line.776"></a>
+<span class="sourceLineNo">777</span> // set the modify time for TimeToLive Cleaner<a name="line.777"></a>
+<span class="sourceLineNo">778</span> fs.setTimes(src, EnvironmentEdgeManager.currentTime(), -1);<a name="line.778"></a>
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+<span class="sourceLineNo">782</span> /**<a name="line.782"></a>
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+<span class="sourceLineNo">785</span> * @param conf must not be null<a name="line.785"></a>
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+<span class="sourceLineNo">790</span> conf.getBoolean("dfs.client.read.shortcircuit.skip.checksum", false);<a name="line.790"></a>
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+<span class="sourceLineNo">793</span> LOG.warn("Configuration \"dfs.client.read.shortcircuit.skip.checksum\" should not " +<a name="line.793"></a>
+<span class="sourceLineNo">794</span> "be set to true." + (useHBaseChecksum ? " HBase checksum doesn't require " +<a name="line.794"></a>
+<span class="sourceLineNo">795</span> "it, see https://issues.apache.org/jira/browse/HBASE-6868." : ""));<a name="line.795"></a>
+<span class="sourceLineNo">796</span> assert !shortCircuitSkipChecksum; //this will fail if assertions are on<a name="line.796"></a>
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+<span class="sourceLineNo">798</span> checkShortCircuitReadBufferSize(conf);<a name="line.798"></a>
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+<span class="sourceLineNo">801</span> /**<a name="line.801"></a>
+<span class="sourceLineNo">802</span> * Check if short circuit read buffer size is set and if not, set it to hbase value.<a name="line.802"></a>
+<span class="sourceLineNo">803</span> * @param conf must not be null<a name="line.803"></a>
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+<span class="sourceLineNo">807</span> final int notSet = -1;<a name="line.807"></a>
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+<span class="sourceLineNo">811</span> // If a size is set, return -- we will use it.<a name="line.811"></a>
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+<span class="sourceLineNo">816</span> int hbaseSize = conf.getInt("hbase." + dfsKey, defaultSize);<a name="line.816"></a>
+<span class="sourceLineNo">817</span> conf.setIfUnset(dfsKey, Integer.toString(hbaseSize));<a name="line.817"></a>
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+<span class="sourceLineNo">819</span><a name="line.819"></a>
+<span class="sourceLineNo">820</span> // Holder singleton idiom. JVM spec ensures this will be run at most once per Classloader, and<a name="line.820"></a>
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+<span class="sourceLineNo">833</span> tmp = true;<a name="line.833"></a>
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+<span class="sourceLineNo">835</span> LOG.warn("Your Hadoop installation does not include the StreamCapabilities class from " +<a name="line.835"></a>
+<span class="sourceLineNo">836</span> "HDFS-11644, so we will skip checking if any FSDataOutputStreams actually " +<a name="line.836"></a>
+<span class="sourceLineNo">837</span> "support hflush/hsync. If you are running on top of HDFS this probably just " +<a name="line.837"></a>
+<span class="sourceLineNo">838</span> "means you have an older version and this can be ignored. If you are running on " +<a name="line.838"></a>
+<span class="sourceLineNo">839</span> "top of an alternate FileSystem implementation you should manually verify that " +<a name="line.839"></a>
+<span class="sourceLineNo">840</span> "hflush and hsync are implemented; otherwise you risk data loss and hard to " +<a name="line.840"></a>
+<span class="sourceLineNo">841</span> "diagnose errors when our assumptions are violated.");<a name="line.841"></a>
+<span class="sourceLineNo">842</span> LOG.debug("The first request to check for StreamCapabilities came from this stacktrace.",<a name="line.842"></a>
+<span class="sourceLineNo">843</span> exception);<a name="line.843"></a>
+<span class="sourceLineNo">844</span> } finally {<a name="line.844"></a>
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+<span class="sourceLineNo">859</span> * implement it. return result of asking the stream otherwise.<a name="line.859"></a>
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+<span class="sourceLineNo">862</span> // be consistent whether or not StreamCapabilities is present<a name="line.862"></a>
+<span class="sourceLineNo">863</span> if (stream == null) {<a name="line.863"></a>
+<span class="sourceLineNo">864</span> throw new NullPointerException("stream parameter must not be null.");<a name="line.864"></a>
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+<span class="sourceLineNo">867</span> // otherwise old versions of Hadoop will break.<a name="line.867"></a>
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+<span class="sourceLineNo">870</span> // if StreamCapabilities is present, but the stream doesn't implement it<a name="line.870"></a>
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+<span class="sourceLineNo">872</span> // we treat that as equivalent to not declaring anything<a name="line.872"></a>
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+<span class="sourceLineNo">876</span> result = ((Boolean)StreamCapabilities.METHOD.invoke(stream, capability)).booleanValue();<a name="line.876"></a>
+<span class="sourceLineNo">877</span> } catch (IllegalAccessException|IllegalArgumentException|InvocationTargetException<a name="line.877"></a>
+<span class="sourceLineNo">878</span> exception) {<a name="line.878"></a>
+<span class="sourceLineNo">879</span> LOG.warn("Your Hadoop installation's StreamCapabilities implementation doesn't match " +<a name="line.879"></a>
+<span class="sourceLineNo">880</span> "our understanding of how it's supposed to work. Please file a JIRA and include " +<a name="line.880"></a>
+<span class="sourceLineNo">881</span> "the following stack trace. In the mean time we're interpreting this behavior " +<a name="line.881"></a>
+<span class="sourceLineNo">882</span> "difference as a lack of capability support, which will probably cause a failure.",<a
<TRUNCATED>