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Posted to commits@hbase.apache.org by gi...@apache.org on 2018/08/02 19:52:19 UTC
[33/51] [partial] hbase-site git commit: Published site at
613d831429960348dc42c3bdb6ea5d31be15c81c.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/7cf6034b/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.html
----------------------------------------------------------------------
diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.html b/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.html
index 1e0659a..981ebcd 100644
--- a/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.html
+++ b/devapidocs/src-html/org/apache/hadoop/hbase/backup/impl/BackupSystemTable.html
@@ -73,1969 +73,1975 @@
<span class="sourceLineNo">065</span>import org.apache.hadoop.hbase.client.Table;<a name="line.65"></a>
<span class="sourceLineNo">066</span>import org.apache.hadoop.hbase.client.TableDescriptor;<a name="line.66"></a>
<span class="sourceLineNo">067</span>import org.apache.hadoop.hbase.client.TableDescriptorBuilder;<a name="line.67"></a>
-<span class="sourceLineNo">068</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.BackupProtos;<a name="line.68"></a>
-<span class="sourceLineNo">069</span>import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos;<a name="line.69"></a>
-<span class="sourceLineNo">070</span>import org.apache.hadoop.hbase.util.Bytes;<a name="line.70"></a>
-<span class="sourceLineNo">071</span>import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;<a name="line.71"></a>
-<span class="sourceLineNo">072</span>import org.apache.hadoop.hbase.util.Pair;<a name="line.72"></a>
-<span class="sourceLineNo">073</span>import org.apache.yetus.audience.InterfaceAudience;<a name="line.73"></a>
-<span class="sourceLineNo">074</span>import org.slf4j.Logger;<a name="line.74"></a>
-<span class="sourceLineNo">075</span>import org.slf4j.LoggerFactory;<a name="line.75"></a>
-<span class="sourceLineNo">076</span><a name="line.76"></a>
-<span class="sourceLineNo">077</span>/**<a name="line.77"></a>
-<span class="sourceLineNo">078</span> * This class provides API to access backup system table<br><a name="line.78"></a>
-<span class="sourceLineNo">079</span> * Backup system table schema:<br><a name="line.79"></a>
-<span class="sourceLineNo">080</span> * <p><a name="line.80"></a>
-<span class="sourceLineNo">081</span> * <ul><a name="line.81"></a>
-<span class="sourceLineNo">082</span> * <li>1. Backup sessions rowkey= "session:"+backupId; value =serialized BackupInfo</li><a name="line.82"></a>
-<span class="sourceLineNo">083</span> * <li>2. Backup start code rowkey = "startcode:"+backupRoot; value = startcode</li><a name="line.83"></a>
-<span class="sourceLineNo">084</span> * <li>3. Incremental backup set rowkey="incrbackupset:"+backupRoot; value=[list of tables]</li><a name="line.84"></a>
-<span class="sourceLineNo">085</span> * <li>4. Table-RS-timestamp map rowkey="trslm:"+backupRoot+table_name; value = map[RS-> last WAL<a name="line.85"></a>
-<span class="sourceLineNo">086</span> * timestamp]</li><a name="line.86"></a>
-<span class="sourceLineNo">087</span> * <li>5. RS - WAL ts map rowkey="rslogts:"+backupRoot +server; value = last WAL timestamp</li><a name="line.87"></a>
-<span class="sourceLineNo">088</span> * <li>6. WALs recorded rowkey="wals:"+WAL unique file name; value = backupId and full WAL file<a name="line.88"></a>
-<span class="sourceLineNo">089</span> * name</li><a name="line.89"></a>
-<span class="sourceLineNo">090</span> * </ul><a name="line.90"></a>
-<span class="sourceLineNo">091</span> * </p><a name="line.91"></a>
-<span class="sourceLineNo">092</span> */<a name="line.92"></a>
-<span class="sourceLineNo">093</span>@InterfaceAudience.Private<a name="line.93"></a>
-<span class="sourceLineNo">094</span>public final class BackupSystemTable implements Closeable {<a name="line.94"></a>
-<span class="sourceLineNo">095</span><a name="line.95"></a>
-<span class="sourceLineNo">096</span> private static final Logger LOG = LoggerFactory.getLogger(BackupSystemTable.class);<a name="line.96"></a>
-<span class="sourceLineNo">097</span><a name="line.97"></a>
-<span class="sourceLineNo">098</span> static class WALItem {<a name="line.98"></a>
-<span class="sourceLineNo">099</span> String backupId;<a name="line.99"></a>
-<span class="sourceLineNo">100</span> String walFile;<a name="line.100"></a>
-<span class="sourceLineNo">101</span> String backupRoot;<a name="line.101"></a>
-<span class="sourceLineNo">102</span><a name="line.102"></a>
-<span class="sourceLineNo">103</span> WALItem(String backupId, String walFile, String backupRoot) {<a name="line.103"></a>
-<span class="sourceLineNo">104</span> this.backupId = backupId;<a name="line.104"></a>
-<span class="sourceLineNo">105</span> this.walFile = walFile;<a name="line.105"></a>
-<span class="sourceLineNo">106</span> this.backupRoot = backupRoot;<a name="line.106"></a>
-<span class="sourceLineNo">107</span> }<a name="line.107"></a>
-<span class="sourceLineNo">108</span><a name="line.108"></a>
-<span class="sourceLineNo">109</span> public String getBackupId() {<a name="line.109"></a>
-<span class="sourceLineNo">110</span> return backupId;<a name="line.110"></a>
-<span class="sourceLineNo">111</span> }<a name="line.111"></a>
-<span class="sourceLineNo">112</span><a name="line.112"></a>
-<span class="sourceLineNo">113</span> public String getWalFile() {<a name="line.113"></a>
-<span class="sourceLineNo">114</span> return walFile;<a name="line.114"></a>
-<span class="sourceLineNo">115</span> }<a name="line.115"></a>
-<span class="sourceLineNo">116</span><a name="line.116"></a>
-<span class="sourceLineNo">117</span> public String getBackupRoot() {<a name="line.117"></a>
-<span class="sourceLineNo">118</span> return backupRoot;<a name="line.118"></a>
-<span class="sourceLineNo">119</span> }<a name="line.119"></a>
-<span class="sourceLineNo">120</span><a name="line.120"></a>
-<span class="sourceLineNo">121</span> @Override<a name="line.121"></a>
-<span class="sourceLineNo">122</span> public String toString() {<a name="line.122"></a>
-<span class="sourceLineNo">123</span> return Path.SEPARATOR + backupRoot + Path.SEPARATOR + backupId + Path.SEPARATOR + walFile;<a name="line.123"></a>
-<span class="sourceLineNo">124</span> }<a name="line.124"></a>
-<span class="sourceLineNo">125</span> }<a name="line.125"></a>
-<span class="sourceLineNo">126</span><a name="line.126"></a>
-<span class="sourceLineNo">127</span> /**<a name="line.127"></a>
-<span class="sourceLineNo">128</span> * Backup system table (main) name<a name="line.128"></a>
-<span class="sourceLineNo">129</span> */<a name="line.129"></a>
-<span class="sourceLineNo">130</span> private TableName tableName;<a name="line.130"></a>
-<span class="sourceLineNo">131</span><a name="line.131"></a>
-<span class="sourceLineNo">132</span> /**<a name="line.132"></a>
-<span class="sourceLineNo">133</span> * Backup System table name for bulk loaded files. We keep all bulk loaded file references in a<a name="line.133"></a>
-<span class="sourceLineNo">134</span> * separate table because we have to isolate general backup operations: create, merge etc from<a name="line.134"></a>
-<span class="sourceLineNo">135</span> * activity of RegionObserver, which controls process of a bulk loading<a name="line.135"></a>
-<span class="sourceLineNo">136</span> * {@link org.apache.hadoop.hbase.backup.BackupObserver}<a name="line.136"></a>
-<span class="sourceLineNo">137</span> */<a name="line.137"></a>
-<span class="sourceLineNo">138</span> private TableName bulkLoadTableName;<a name="line.138"></a>
-<span class="sourceLineNo">139</span><a name="line.139"></a>
-<span class="sourceLineNo">140</span> /**<a name="line.140"></a>
-<span class="sourceLineNo">141</span> * Stores backup sessions (contexts)<a name="line.141"></a>
-<span class="sourceLineNo">142</span> */<a name="line.142"></a>
-<span class="sourceLineNo">143</span> final static byte[] SESSIONS_FAMILY = "session".getBytes();<a name="line.143"></a>
-<span class="sourceLineNo">144</span> /**<a name="line.144"></a>
-<span class="sourceLineNo">145</span> * Stores other meta<a name="line.145"></a>
-<span class="sourceLineNo">146</span> */<a name="line.146"></a>
-<span class="sourceLineNo">147</span> final static byte[] META_FAMILY = "meta".getBytes();<a name="line.147"></a>
-<span class="sourceLineNo">148</span> final static byte[] BULK_LOAD_FAMILY = "bulk".getBytes();<a name="line.148"></a>
-<span class="sourceLineNo">149</span> /**<a name="line.149"></a>
-<span class="sourceLineNo">150</span> * Connection to HBase cluster, shared among all instances<a name="line.150"></a>
-<span class="sourceLineNo">151</span> */<a name="line.151"></a>
-<span class="sourceLineNo">152</span> private final Connection connection;<a name="line.152"></a>
-<span class="sourceLineNo">153</span><a name="line.153"></a>
-<span class="sourceLineNo">154</span> private final static String BACKUP_INFO_PREFIX = "session:";<a name="line.154"></a>
-<span class="sourceLineNo">155</span> private final static String START_CODE_ROW = "startcode:";<a name="line.155"></a>
-<span class="sourceLineNo">156</span> private final static byte[] ACTIVE_SESSION_ROW = "activesession:".getBytes();<a name="line.156"></a>
-<span class="sourceLineNo">157</span> private final static byte[] ACTIVE_SESSION_COL = "c".getBytes();<a name="line.157"></a>
-<span class="sourceLineNo">158</span><a name="line.158"></a>
-<span class="sourceLineNo">159</span> private final static byte[] ACTIVE_SESSION_YES = "yes".getBytes();<a name="line.159"></a>
-<span class="sourceLineNo">160</span> private final static byte[] ACTIVE_SESSION_NO = "no".getBytes();<a name="line.160"></a>
-<span class="sourceLineNo">161</span><a name="line.161"></a>
-<span class="sourceLineNo">162</span> private final static String INCR_BACKUP_SET = "incrbackupset:";<a name="line.162"></a>
-<span class="sourceLineNo">163</span> private final static String TABLE_RS_LOG_MAP_PREFIX = "trslm:";<a name="line.163"></a>
-<span class="sourceLineNo">164</span> private final static String RS_LOG_TS_PREFIX = "rslogts:";<a name="line.164"></a>
-<span class="sourceLineNo">165</span><a name="line.165"></a>
-<span class="sourceLineNo">166</span> private final static String BULK_LOAD_PREFIX = "bulk:";<a name="line.166"></a>
-<span class="sourceLineNo">167</span> private final static byte[] BULK_LOAD_PREFIX_BYTES = BULK_LOAD_PREFIX.getBytes();<a name="line.167"></a>
-<span class="sourceLineNo">168</span> private final static byte[] DELETE_OP_ROW = "delete_op_row".getBytes();<a name="line.168"></a>
-<span class="sourceLineNo">169</span> private final static byte[] MERGE_OP_ROW = "merge_op_row".getBytes();<a name="line.169"></a>
-<span class="sourceLineNo">170</span><a name="line.170"></a>
-<span class="sourceLineNo">171</span> final static byte[] TBL_COL = Bytes.toBytes("tbl");<a name="line.171"></a>
-<span class="sourceLineNo">172</span> final static byte[] FAM_COL = Bytes.toBytes("fam");<a name="line.172"></a>
-<span class="sourceLineNo">173</span> final static byte[] PATH_COL = Bytes.toBytes("path");<a name="line.173"></a>
-<span class="sourceLineNo">174</span> final static byte[] STATE_COL = Bytes.toBytes("state");<a name="line.174"></a>
-<span class="sourceLineNo">175</span> // the two states a bulk loaded file can be<a name="line.175"></a>
-<span class="sourceLineNo">176</span> final static byte[] BL_PREPARE = Bytes.toBytes("R");<a name="line.176"></a>
-<span class="sourceLineNo">177</span> final static byte[] BL_COMMIT = Bytes.toBytes("D");<a name="line.177"></a>
-<span class="sourceLineNo">178</span><a name="line.178"></a>
-<span class="sourceLineNo">179</span> private final static String WALS_PREFIX = "wals:";<a name="line.179"></a>
-<span class="sourceLineNo">180</span> private final static String SET_KEY_PREFIX = "backupset:";<a name="line.180"></a>
-<span class="sourceLineNo">181</span><a name="line.181"></a>
-<span class="sourceLineNo">182</span> // separator between BULK_LOAD_PREFIX and ordinals<a name="line.182"></a>
-<span class="sourceLineNo">183</span> protected final static String BLK_LD_DELIM = ":";<a name="line.183"></a>
-<span class="sourceLineNo">184</span> private final static byte[] EMPTY_VALUE = new byte[] {};<a name="line.184"></a>
-<span class="sourceLineNo">185</span><a name="line.185"></a>
-<span class="sourceLineNo">186</span> // Safe delimiter in a string<a name="line.186"></a>
-<span class="sourceLineNo">187</span> private final static String NULL = "\u0000";<a name="line.187"></a>
-<span class="sourceLineNo">188</span><a name="line.188"></a>
-<span class="sourceLineNo">189</span> public BackupSystemTable(Connection conn) throws IOException {<a name="line.189"></a>
-<span class="sourceLineNo">190</span> this.connection = conn;<a name="line.190"></a>
-<span class="sourceLineNo">191</span> Configuration conf = this.connection.getConfiguration();<a name="line.191"></a>
-<span class="sourceLineNo">192</span> tableName = BackupSystemTable.getTableName(conf);<a name="line.192"></a>
-<span class="sourceLineNo">193</span> bulkLoadTableName = BackupSystemTable.getTableNameForBulkLoadedData(conf);<a name="line.193"></a>
-<span class="sourceLineNo">194</span> checkSystemTable();<a name="line.194"></a>
-<span class="sourceLineNo">195</span> }<a name="line.195"></a>
-<span class="sourceLineNo">196</span><a name="line.196"></a>
-<span class="sourceLineNo">197</span> private void checkSystemTable() throws IOException {<a name="line.197"></a>
-<span class="sourceLineNo">198</span> try (Admin admin = connection.getAdmin()) {<a name="line.198"></a>
-<span class="sourceLineNo">199</span> verifyNamespaceExists(admin);<a name="line.199"></a>
-<span class="sourceLineNo">200</span> Configuration conf = connection.getConfiguration();<a name="line.200"></a>
-<span class="sourceLineNo">201</span> if (!admin.tableExists(tableName)) {<a name="line.201"></a>
-<span class="sourceLineNo">202</span> TableDescriptor backupHTD = BackupSystemTable.getSystemTableDescriptor(conf);<a name="line.202"></a>
-<span class="sourceLineNo">203</span> admin.createTable(backupHTD);<a name="line.203"></a>
-<span class="sourceLineNo">204</span> }<a name="line.204"></a>
-<span class="sourceLineNo">205</span> if (!admin.tableExists(bulkLoadTableName)) {<a name="line.205"></a>
-<span class="sourceLineNo">206</span> TableDescriptor blHTD = BackupSystemTable.getSystemTableForBulkLoadedDataDescriptor(conf);<a name="line.206"></a>
-<span class="sourceLineNo">207</span> admin.createTable(blHTD);<a name="line.207"></a>
-<span class="sourceLineNo">208</span> }<a name="line.208"></a>
-<span class="sourceLineNo">209</span> waitForSystemTable(admin, tableName);<a name="line.209"></a>
-<span class="sourceLineNo">210</span> waitForSystemTable(admin, bulkLoadTableName);<a name="line.210"></a>
-<span class="sourceLineNo">211</span> }<a name="line.211"></a>
-<span class="sourceLineNo">212</span> }<a name="line.212"></a>
-<span class="sourceLineNo">213</span><a name="line.213"></a>
-<span class="sourceLineNo">214</span> private void verifyNamespaceExists(Admin admin) throws IOException {<a name="line.214"></a>
-<span class="sourceLineNo">215</span> String namespaceName = tableName.getNamespaceAsString();<a name="line.215"></a>
-<span class="sourceLineNo">216</span> NamespaceDescriptor ns = NamespaceDescriptor.create(namespaceName).build();<a name="line.216"></a>
-<span class="sourceLineNo">217</span> NamespaceDescriptor[] list = admin.listNamespaceDescriptors();<a name="line.217"></a>
-<span class="sourceLineNo">218</span> boolean exists = false;<a name="line.218"></a>
-<span class="sourceLineNo">219</span> for (NamespaceDescriptor nsd : list) {<a name="line.219"></a>
-<span class="sourceLineNo">220</span> if (nsd.getName().equals(ns.getName())) {<a name="line.220"></a>
-<span class="sourceLineNo">221</span> exists = true;<a name="line.221"></a>
-<span class="sourceLineNo">222</span> break;<a name="line.222"></a>
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-<span class="sourceLineNo">224</span> }<a name="line.224"></a>
-<span class="sourceLineNo">225</span> if (!exists) {<a name="line.225"></a>
-<span class="sourceLineNo">226</span> admin.createNamespace(ns);<a name="line.226"></a>
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-<span class="sourceLineNo">228</span> }<a name="line.228"></a>
-<span class="sourceLineNo">229</span><a name="line.229"></a>
-<span class="sourceLineNo">230</span> private void waitForSystemTable(Admin admin, TableName tableName) throws IOException {<a name="line.230"></a>
-<span class="sourceLineNo">231</span> long TIMEOUT = 60000;<a name="line.231"></a>
-<span class="sourceLineNo">232</span> long startTime = EnvironmentEdgeManager.currentTime();<a name="line.232"></a>
-<span class="sourceLineNo">233</span> while (!admin.tableExists(tableName) || !admin.isTableAvailable(tableName)) {<a name="line.233"></a>
-<span class="sourceLineNo">234</span> try {<a name="line.234"></a>
-<span class="sourceLineNo">235</span> Thread.sleep(100);<a name="line.235"></a>
-<span class="sourceLineNo">236</span> } catch (InterruptedException e) {<a name="line.236"></a>
-<span class="sourceLineNo">237</span> }<a name="line.237"></a>
-<span class="sourceLineNo">238</span> if (EnvironmentEdgeManager.currentTime() - startTime > TIMEOUT) {<a name="line.238"></a>
-<span class="sourceLineNo">239</span> throw new IOException(<a name="line.239"></a>
-<span class="sourceLineNo">240</span> "Failed to create backup system table " + tableName + " after " + TIMEOUT + "ms");<a name="line.240"></a>
-<span class="sourceLineNo">241</span> }<a name="line.241"></a>
-<span class="sourceLineNo">242</span> }<a name="line.242"></a>
-<span class="sourceLineNo">243</span> LOG.debug("Backup table " + tableName + " exists and available");<a name="line.243"></a>
-<span class="sourceLineNo">244</span> }<a name="line.244"></a>
-<span class="sourceLineNo">245</span><a name="line.245"></a>
-<span class="sourceLineNo">246</span> @Override<a name="line.246"></a>
-<span class="sourceLineNo">247</span> public void close() {<a name="line.247"></a>
-<span class="sourceLineNo">248</span> // do nothing<a name="line.248"></a>
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-<span class="sourceLineNo">250</span><a name="line.250"></a>
-<span class="sourceLineNo">251</span> /**<a name="line.251"></a>
-<span class="sourceLineNo">252</span> * Updates status (state) of a backup session in backup system table table<a name="line.252"></a>
-<span class="sourceLineNo">253</span> * @param info backup info<a name="line.253"></a>
-<span class="sourceLineNo">254</span> * @throws IOException exception<a name="line.254"></a>
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-<span class="sourceLineNo">256</span> public void updateBackupInfo(BackupInfo info) throws IOException {<a name="line.256"></a>
-<span class="sourceLineNo">257</span> if (LOG.isTraceEnabled()) {<a name="line.257"></a>
-<span class="sourceLineNo">258</span> LOG.trace("update backup status in backup system table for: " + info.getBackupId()<a name="line.258"></a>
-<span class="sourceLineNo">259</span> + " set status=" + info.getState());<a name="line.259"></a>
-<span class="sourceLineNo">260</span> }<a name="line.260"></a>
-<span class="sourceLineNo">261</span> try (Table table = connection.getTable(tableName)) {<a name="line.261"></a>
-<span class="sourceLineNo">262</span> Put put = createPutForBackupInfo(info);<a name="line.262"></a>
-<span class="sourceLineNo">263</span> table.put(put);<a name="line.263"></a>
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-<span class="sourceLineNo">266</span><a name="line.266"></a>
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-<span class="sourceLineNo">268</span> * @param backupId the backup Id<a name="line.268"></a>
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-<span class="sourceLineNo">272</span> Scan scan = BackupSystemTable.createScanForBulkLoadedFiles(backupId);<a name="line.272"></a>
-<span class="sourceLineNo">273</span> try (Table table = connection.getTable(bulkLoadTableName);<a name="line.273"></a>
-<span class="sourceLineNo">274</span> ResultScanner scanner = table.getScanner(scan)) {<a name="line.274"></a>
-<span class="sourceLineNo">275</span> Result res = null;<a name="line.275"></a>
-<span class="sourceLineNo">276</span> Map<byte[], String> map = new TreeMap<>(Bytes.BYTES_COMPARATOR);<a name="line.276"></a>
-<span class="sourceLineNo">277</span> while ((res = scanner.next()) != null) {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> res.advance();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> byte[] row = CellUtil.cloneRow(res.listCells().get(0));<a name="line.279"></a>
-<span class="sourceLineNo">280</span> for (Cell cell : res.listCells()) {<a name="line.280"></a>
-<span class="sourceLineNo">281</span> if (CellUtil.compareQualifiers(cell, BackupSystemTable.PATH_COL, 0,<a name="line.281"></a>
-<span class="sourceLineNo">282</span> BackupSystemTable.PATH_COL.length) == 0) {<a name="line.282"></a>
-<span class="sourceLineNo">283</span> map.put(row, Bytes.toString(CellUtil.cloneValue(cell)));<a name="line.283"></a>
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-<span class="sourceLineNo">292</span> * Used during restore<a name="line.292"></a>
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-<span class="sourceLineNo">294</span> * @param sTableList List of tables<a name="line.294"></a>
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-<span class="sourceLineNo">296</span> */<a name="line.296"></a>
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