Repository: hbase-site Updated Branches: refs/heads/asf-site d5aa6a181 -> 709b8fccb
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/709b8fcc/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html index 40e88c1..740d74a 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/master/snapshot/SnapshotManager.html @@ -688,7 +688,7 @@ <span class="sourceLineNo">680</span> */<a name="line.680"></a> <span class="sourceLineNo">681</span> private long cloneSnapshot(final SnapshotDescription reqSnapshot, final TableName tableName,<a name="line.681"></a> <span class="sourceLineNo">682</span> final SnapshotDescription snapshot, final HTableDescriptor snapshotTableDesc,<a name="line.682"></a> -<span class="sourceLineNo">683</span> final NonceKey nonceKey, final boolean restoreAcl) throws IOException {<a name="line.683"></a> +<span class="sourceLineNo">683</span> final NonceKey nonceKey) throws IOException {<a name="line.683"></a> <span class="sourceLineNo">684</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.684"></a> <span class="sourceLineNo">685</span> HTableDescriptor htd = new HTableDescriptor(tableName, snapshotTableDesc);<a name="line.685"></a> <span class="sourceLineNo">686</span> if (cpHost != null) {<a name="line.686"></a> @@ -696,7 +696,7 @@ <span class="sourceLineNo">688</span> }<a name="line.688"></a> <span class="sourceLineNo">689</span> long procId;<a name="line.689"></a> <span class="sourceLineNo">690</span> try {<a name="line.690"></a> -<span class="sourceLineNo">691</span> procId = cloneSnapshot(snapshot, htd, nonceKey, restoreAcl);<a name="line.691"></a> +<span class="sourceLineNo">691</span> procId = cloneSnapshot(snapshot, htd, nonceKey);<a name="line.691"></a> <span class="sourceLineNo">692</span> } catch (IOException e) {<a name="line.692"></a> <span class="sourceLineNo">693</span> LOG.error("Exception occurred while cloning the snapshot " + snapshot.getName()<a name="line.693"></a> <span class="sourceLineNo">694</span> + " as table " + tableName.getNameAsString(), e);<a name="line.694"></a> @@ -720,7 +720,7 @@ <span class="sourceLineNo">712</span> * @return procId the ID of the clone snapshot procedure<a name="line.712"></a> <span class="sourceLineNo">713</span> */<a name="line.713"></a> <span class="sourceLineNo">714</span> synchronized long cloneSnapshot(final SnapshotDescription snapshot,<a name="line.714"></a> -<span class="sourceLineNo">715</span> final HTableDescriptor hTableDescriptor, final NonceKey nonceKey, final boolean restoreAcl)<a name="line.715"></a> +<span class="sourceLineNo">715</span> final HTableDescriptor hTableDescriptor, final NonceKey nonceKey)<a name="line.715"></a> <span class="sourceLineNo">716</span> throws HBaseSnapshotException {<a name="line.716"></a> <span class="sourceLineNo">717</span> TableName tableName = hTableDescriptor.getTableName();<a name="line.717"></a> <span class="sourceLineNo">718</span><a name="line.718"></a> @@ -736,8 +736,8 @@ <span class="sourceLineNo">728</span><a name="line.728"></a> <span class="sourceLineNo">729</span> try {<a name="line.729"></a> <span class="sourceLineNo">730</span> long procId = master.getMasterProcedureExecutor().submitProcedure(<a name="line.730"></a> -<span class="sourceLineNo">731</span> new CloneSnapshotProcedure(master.getMasterProcedureExecutor().getEnvironment(),<a name="line.731"></a> -<span class="sourceLineNo">732</span> hTableDescriptor, snapshot, restoreAcl),<a name="line.732"></a> +<span class="sourceLineNo">731</span> new CloneSnapshotProcedure(<a name="line.731"></a> +<span class="sourceLineNo">732</span> master.getMasterProcedureExecutor().getEnvironment(), hTableDescriptor, snapshot),<a name="line.732"></a> <span class="sourceLineNo">733</span> nonceKey);<a name="line.733"></a> <span class="sourceLineNo">734</span> this.restoreTableToProcIdMap.put(tableName, procId);<a name="line.734"></a> <span class="sourceLineNo">735</span> return procId;<a name="line.735"></a> @@ -755,8 +755,8 @@ <span class="sourceLineNo">747</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.747"></a> <span class="sourceLineNo">748</span> * @throws IOException<a name="line.748"></a> <span class="sourceLineNo">749</span> */<a name="line.749"></a> -<span class="sourceLineNo">750</span> public long restoreOrCloneSnapshot(final SnapshotDescription reqSnapshot, final NonceKey nonceKey,<a name="line.750"></a> -<span class="sourceLineNo">751</span> final boolean restoreAcl) throws IOException {<a name="line.751"></a> +<span class="sourceLineNo">750</span> public long restoreOrCloneSnapshot(final SnapshotDescription reqSnapshot, final NonceKey nonceKey)<a name="line.750"></a> +<span class="sourceLineNo">751</span> throws IOException {<a name="line.751"></a> <span class="sourceLineNo">752</span> FileSystem fs = master.getMasterFileSystem().getFileSystem();<a name="line.752"></a> <span class="sourceLineNo">753</span> Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(reqSnapshot, rootDir);<a name="line.753"></a> <span class="sourceLineNo">754</span><a name="line.754"></a> @@ -787,394 +787,393 @@ <span class="sourceLineNo">779</span> if (MetaTableAccessor.tableExists(master.getConnection(), tableName)) {<a name="line.779"></a> <span class="sourceLineNo">780</span> procId = restoreSnapshot(reqSnapshot, tableName, snapshot, snapshotTableDesc, nonceKey);<a name="line.780"></a> <span class="sourceLineNo">781</span> } else {<a name="line.781"></a> -<span class="sourceLineNo">782</span> procId =<a name="line.782"></a> -<span class="sourceLineNo">783</span> cloneSnapshot(reqSnapshot, tableName, snapshot, snapshotTableDesc, nonceKey, restoreAcl);<a name="line.783"></a> -<span class="sourceLineNo">784</span> }<a name="line.784"></a> -<span class="sourceLineNo">785</span> return procId;<a name="line.785"></a> -<span class="sourceLineNo">786</span> }<a name="line.786"></a> -<span class="sourceLineNo">787</span><a name="line.787"></a> -<span class="sourceLineNo">788</span> /**<a name="line.788"></a> -<span class="sourceLineNo">789</span> * Restore the specified snapshot.<a name="line.789"></a> -<span class="sourceLineNo">790</span> * The restore will fail if the destination table has a snapshot or restore in progress.<a name="line.790"></a> -<span class="sourceLineNo">791</span> *<a name="line.791"></a> -<span class="sourceLineNo">792</span> * @param reqSnapshot Snapshot Descriptor from request<a name="line.792"></a> -<span class="sourceLineNo">793</span> * @param tableName table to restore<a name="line.793"></a> -<span class="sourceLineNo">794</span> * @param snapshot Snapshot Descriptor<a name="line.794"></a> -<span class="sourceLineNo">795</span> * @param snapshotTableDesc Table Descriptor<a name="line.795"></a> -<span class="sourceLineNo">796</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.796"></a> -<span class="sourceLineNo">797</span> * @return procId the ID of the restore snapshot procedure<a name="line.797"></a> -<span class="sourceLineNo">798</span> * @throws IOException<a name="line.798"></a> -<span class="sourceLineNo">799</span> */<a name="line.799"></a> -<span class="sourceLineNo">800</span> private long restoreSnapshot(final SnapshotDescription reqSnapshot, final TableName tableName,<a name="line.800"></a> -<span class="sourceLineNo">801</span> final SnapshotDescription snapshot, final HTableDescriptor snapshotTableDesc,<a name="line.801"></a> -<span class="sourceLineNo">802</span> final NonceKey nonceKey) throws IOException {<a name="line.802"></a> -<span class="sourceLineNo">803</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.803"></a> -<span class="sourceLineNo">804</span><a name="line.804"></a> -<span class="sourceLineNo">805</span> if (master.getTableStateManager().isTableState(<a name="line.805"></a> -<span class="sourceLineNo">806</span> TableName.valueOf(snapshot.getTable()), TableState.State.ENABLED)) {<a name="line.806"></a> -<span class="sourceLineNo">807</span> throw new UnsupportedOperationException("Table '" +<a name="line.807"></a> -<span class="sourceLineNo">808</span> TableName.valueOf(snapshot.getTable()) + "' must be disabled in order to " +<a name="line.808"></a> -<span class="sourceLineNo">809</span> "perform a restore operation.");<a name="line.809"></a> -<span class="sourceLineNo">810</span> }<a name="line.810"></a> -<span class="sourceLineNo">811</span><a name="line.811"></a> -<span class="sourceLineNo">812</span> // call Coprocessor pre hook<a name="line.812"></a> -<span class="sourceLineNo">813</span> if (cpHost != null) {<a name="line.813"></a> -<span class="sourceLineNo">814</span> cpHost.preRestoreSnapshot(reqSnapshot, snapshotTableDesc);<a name="line.814"></a> -<span class="sourceLineNo">815</span> }<a name="line.815"></a> -<span class="sourceLineNo">816</span><a name="line.816"></a> -<span class="sourceLineNo">817</span> long procId;<a name="line.817"></a> -<span class="sourceLineNo">818</span> try {<a name="line.818"></a> -<span class="sourceLineNo">819</span> procId = restoreSnapshot(snapshot, snapshotTableDesc, nonceKey);<a name="line.819"></a> -<span class="sourceLineNo">820</span> } catch (IOException e) {<a name="line.820"></a> -<span class="sourceLineNo">821</span> LOG.error("Exception occurred while restoring the snapshot " + snapshot.getName()<a name="line.821"></a> -<span class="sourceLineNo">822</span> + " as table " + tableName.getNameAsString(), e);<a name="line.822"></a> -<span class="sourceLineNo">823</span> throw e;<a name="line.823"></a> -<span class="sourceLineNo">824</span> }<a name="line.824"></a> -<span class="sourceLineNo">825</span> LOG.info("Restore snapshot=" + snapshot.getName() + " as table=" + tableName);<a name="line.825"></a> -<span class="sourceLineNo">826</span><a name="line.826"></a> -<span class="sourceLineNo">827</span> if (cpHost != null) {<a name="line.827"></a> -<span class="sourceLineNo">828</span> cpHost.postRestoreSnapshot(reqSnapshot, snapshotTableDesc);<a name="line.828"></a> -<span class="sourceLineNo">829</span> }<a name="line.829"></a> -<span class="sourceLineNo">830</span><a name="line.830"></a> -<span class="sourceLineNo">831</span> return procId;<a name="line.831"></a> -<span class="sourceLineNo">832</span> }<a name="line.832"></a> -<span class="sourceLineNo">833</span><a name="line.833"></a> -<span class="sourceLineNo">834</span> /**<a name="line.834"></a> -<span class="sourceLineNo">835</span> * Restore the specified snapshot.<a name="line.835"></a> -<span class="sourceLineNo">836</span> * The restore will fail if the destination table has a snapshot or restore in progress.<a name="line.836"></a> -<span class="sourceLineNo">837</span> *<a name="line.837"></a> -<span class="sourceLineNo">838</span> * @param snapshot Snapshot Descriptor<a name="line.838"></a> -<span class="sourceLineNo">839</span> * @param hTableDescriptor Table Descriptor<a name="line.839"></a> -<span class="sourceLineNo">840</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.840"></a> -<span class="sourceLineNo">841</span> * @return procId the ID of the restore snapshot procedure<a name="line.841"></a> -<span class="sourceLineNo">842</span> */<a name="line.842"></a> -<span class="sourceLineNo">843</span> private synchronized long restoreSnapshot(final SnapshotDescription snapshot,<a name="line.843"></a> -<span class="sourceLineNo">844</span> final HTableDescriptor hTableDescriptor, final NonceKey nonceKey)<a name="line.844"></a> -<span class="sourceLineNo">845</span> throws HBaseSnapshotException {<a name="line.845"></a> -<span class="sourceLineNo">846</span> final TableName tableName = hTableDescriptor.getTableName();<a name="line.846"></a> -<span class="sourceLineNo">847</span><a name="line.847"></a> -<span class="sourceLineNo">848</span> // make sure we aren't running a snapshot on the same table<a name="line.848"></a> -<span class="sourceLineNo">849</span> if (isTakingSnapshot(tableName)) {<a name="line.849"></a> -<span class="sourceLineNo">850</span> throw new RestoreSnapshotException("Snapshot in progress on the restore table=" + tableName);<a name="line.850"></a> -<span class="sourceLineNo">851</span> }<a name="line.851"></a> -<span class="sourceLineNo">852</span><a name="line.852"></a> -<span class="sourceLineNo">853</span> // make sure we aren't running a restore on the same table<a name="line.853"></a> -<span class="sourceLineNo">854</span> if (isRestoringTable(tableName)) {<a name="line.854"></a> -<span class="sourceLineNo">855</span> throw new RestoreSnapshotException("Restore already in progress on the table=" + tableName);<a name="line.855"></a> -<span class="sourceLineNo">856</span> }<a name="line.856"></a> -<span class="sourceLineNo">857</span><a name="line.857"></a> -<span class="sourceLineNo">858</span> try {<a name="line.858"></a> -<span class="sourceLineNo">859</span> long procId = master.getMasterProcedureExecutor().submitProcedure(<a name="line.859"></a> -<span class="sourceLineNo">860</span> new RestoreSnapshotProcedure(<a name="line.860"></a> -<span class="sourceLineNo">861</span> master.getMasterProcedureExecutor().getEnvironment(), hTableDescriptor, snapshot),<a name="line.861"></a> -<span class="sourceLineNo">862</span> nonceKey);<a name="line.862"></a> -<span class="sourceLineNo">863</span> this.restoreTableToProcIdMap.put(tableName, procId);<a name="line.863"></a> -<span class="sourceLineNo">864</span> return procId;<a name="line.864"></a> -<span class="sourceLineNo">865</span> } catch (Exception e) {<a name="line.865"></a> -<span class="sourceLineNo">866</span> String msg = "Couldn't restore the snapshot=" + ClientSnapshotDescriptionUtils.toString(<a name="line.866"></a> -<span class="sourceLineNo">867</span> snapshot) +<a name="line.867"></a> -<span class="sourceLineNo">868</span> " on table=" + tableName;<a name="line.868"></a> -<span class="sourceLineNo">869</span> LOG.error(msg, e);<a name="line.869"></a> -<span class="sourceLineNo">870</span> throw new RestoreSnapshotException(msg, e);<a name="line.870"></a> -<span class="sourceLineNo">871</span> }<a name="line.871"></a> -<span class="sourceLineNo">872</span> }<a name="line.872"></a> -<span class="sourceLineNo">873</span><a name="line.873"></a> -<span class="sourceLineNo">874</span> /**<a name="line.874"></a> -<span class="sourceLineNo">875</span> * Verify if the restore of the specified table is in progress.<a name="line.875"></a> -<span class="sourceLineNo">876</span> *<a name="line.876"></a> -<span class="sourceLineNo">877</span> * @param tableName table under restore<a name="line.877"></a> -<span class="sourceLineNo">878</span> * @return <tt>true</tt> if there is a restore in progress of the specified table.<a name="line.878"></a> -<span class="sourceLineNo">879</span> */<a name="line.879"></a> -<span class="sourceLineNo">880</span> private synchronized boolean isRestoringTable(final TableName tableName) {<a name="line.880"></a> -<span class="sourceLineNo">881</span> Long procId = this.restoreTableToProcIdMap.get(tableName);<a name="line.881"></a> -<span class="sourceLineNo">882</span> if (procId == null) {<a name="line.882"></a> -<span class="sourceLineNo">883</span> return false;<a name="line.883"></a> -<span class="sourceLineNo">884</span> }<a name="line.884"></a> -<span class="sourceLineNo">885</span> ProcedureExecutor<MasterProcedureEnv> procExec = master.getMasterProcedureExecutor();<a name="line.885"></a> -<span class="sourceLineNo">886</span> if (procExec.isRunning() && !procExec.isFinished(procId)) {<a name="line.886"></a> -<span class="sourceLineNo">887</span> return true;<a name="line.887"></a> -<span class="sourceLineNo">888</span> } else {<a name="line.888"></a> -<span class="sourceLineNo">889</span> this.restoreTableToProcIdMap.remove(tableName);<a name="line.889"></a> -<span class="sourceLineNo">890</span> return false;<a name="line.890"></a> -<span class="sourceLineNo">891</span> }<a name="line.891"></a> -<span class="sourceLineNo">892</span><a name="line.892"></a> -<span class="sourceLineNo">893</span> }<a name="line.893"></a> -<span class="sourceLineNo">894</span><a name="line.894"></a> -<span class="sourceLineNo">895</span> /**<a name="line.895"></a> -<span class="sourceLineNo">896</span> * Return the handler if it is currently live and has the same snapshot target name.<a name="line.896"></a> -<span class="sourceLineNo">897</span> * The handler is removed from the sentinels map if completed.<a name="line.897"></a> -<span 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-<span class="sourceLineNo">909</span> TableName snapshotTable = TableName.valueOf(snapshot.getTable());<a name="line.909"></a> -<span class="sourceLineNo">910</span> SnapshotSentinel h = sentinels.get(snapshotTable);<a name="line.910"></a> -<span class="sourceLineNo">911</span> if (h == null) {<a name="line.911"></a> -<span class="sourceLineNo">912</span> return null;<a name="line.912"></a> -<span class="sourceLineNo">913</span> }<a name="line.913"></a> -<span class="sourceLineNo">914</span><a name="line.914"></a> -<span class="sourceLineNo">915</span> if (!h.getSnapshot().getName().equals(snapshot.getName())) {<a name="line.915"></a> -<span class="sourceLineNo">916</span> // specified snapshot is to the one currently running<a name="line.916"></a> -<span class="sourceLineNo">917</span> return null;<a name="line.917"></a> -<span class="sourceLineNo">918</span> }<a name="line.918"></a> -<span class="sourceLineNo">919</span><a name="line.919"></a> -<span class="sourceLineNo">920</span> // Remove from the "in-progress" list once completed<a name="line.920"></a> -<span class="sourceLineNo">921</span> if (h.isFinished()) {<a name="line.921"></a> -<span class="sourceLineNo">922</span> sentinels.remove(snapshotTable);<a name="line.922"></a> -<span class="sourceLineNo">923</span> }<a name="line.923"></a> -<span class="sourceLineNo">924</span><a name="line.924"></a> -<span class="sourceLineNo">925</span> return h;<a name="line.925"></a> -<span class="sourceLineNo">926</span> }<a name="line.926"></a> -<span class="sourceLineNo">927</span><a name="line.927"></a> -<span class="sourceLineNo">928</span> /**<a name="line.928"></a> -<span class="sourceLineNo">929</span> * Removes "abandoned" snapshot/restore requests.<a name="line.929"></a> -<span class="sourceLineNo">930</span> * As part of the HBaseAdmin snapshot/restore API the operation status is checked until completed,<a name="line.930"></a> -<span class="sourceLineNo">931</span> * and the in-progress maps are cleaned up when the status of a completed task is requested.<a name="line.931"></a> -<span class="sourceLineNo">932</span> * To avoid having sentinels staying around for long time if something client side is failed,<a name="line.932"></a> -<span class="sourceLineNo">933</span> * each operation tries to clean up the in-progress maps sentinels finished from a long time.<a name="line.933"></a> -<span class="sourceLineNo">934</span> */<a name="line.934"></a> -<span class="sourceLineNo">935</span> private void cleanupSentinels() {<a name="line.935"></a> -<span class="sourceLineNo">936</span> cleanupSentinels(this.snapshotHandlers);<a name="line.936"></a> -<span class="sourceLineNo">937</span> cleanupCompletedRestoreInMap();<a name="line.937"></a> -<span class="sourceLineNo">938</span> }<a name="line.938"></a> -<span class="sourceLineNo">939</span><a name="line.939"></a> -<span class="sourceLineNo">940</span> /**<a name="line.940"></a> -<span class="sourceLineNo">941</span> * Remove the sentinels that are marked as finished and the completion time<a name="line.941"></a> -<span class="sourceLineNo">942</span> * has exceeded the removal timeout.<a name="line.942"></a> -<span class="sourceLineNo">943</span> * @param sentinels map of sentinels to clean<a name="line.943"></a> -<span class="sourceLineNo">944</span> */<a name="line.944"></a> -<span class="sourceLineNo">945</span> private synchronized void cleanupSentinels(final Map<TableName, SnapshotSentinel> sentinels) {<a name="line.945"></a> -<span class="sourceLineNo">946</span> long currentTime = EnvironmentEdgeManager.currentTime();<a name="line.946"></a> -<span class="sourceLineNo">947</span> Iterator<Map.Entry<TableName, SnapshotSentinel>> it =<a name="line.947"></a> -<span class="sourceLineNo">948</span> sentinels.entrySet().iterator();<a name="line.948"></a> -<span class="sourceLineNo">949</span> while (it.hasNext()) {<a name="line.949"></a> -<span class="sourceLineNo">950</span> Map.Entry<TableName, SnapshotSentinel> entry = 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class="sourceLineNo">788</span> * Restore the specified snapshot.<a name="line.788"></a> +<span class="sourceLineNo">789</span> * The restore will fail if the destination table has a snapshot or restore in progress.<a name="line.789"></a> +<span class="sourceLineNo">790</span> *<a name="line.790"></a> +<span class="sourceLineNo">791</span> * @param reqSnapshot Snapshot Descriptor from request<a name="line.791"></a> +<span class="sourceLineNo">792</span> * @param tableName table to restore<a name="line.792"></a> +<span class="sourceLineNo">793</span> * @param snapshot Snapshot Descriptor<a name="line.793"></a> +<span class="sourceLineNo">794</span> * @param snapshotTableDesc Table Descriptor<a name="line.794"></a> +<span class="sourceLineNo">795</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.795"></a> +<span class="sourceLineNo">796</span> * @return procId the ID of the restore snapshot procedure<a name="line.796"></a> +<span class="sourceLineNo">797</span> * @throws IOException<a name="line.797"></a> +<span class="sourceLineNo">798</span> */<a name="line.798"></a> +<span class="sourceLineNo">799</span> private long restoreSnapshot(final SnapshotDescription reqSnapshot, final TableName tableName,<a name="line.799"></a> +<span class="sourceLineNo">800</span> final SnapshotDescription snapshot, final HTableDescriptor snapshotTableDesc,<a name="line.800"></a> +<span class="sourceLineNo">801</span> final NonceKey nonceKey) throws IOException {<a name="line.801"></a> +<span class="sourceLineNo">802</span> MasterCoprocessorHost cpHost = master.getMasterCoprocessorHost();<a name="line.802"></a> +<span class="sourceLineNo">803</span><a name="line.803"></a> +<span class="sourceLineNo">804</span> if (master.getTableStateManager().isTableState(<a name="line.804"></a> +<span class="sourceLineNo">805</span> TableName.valueOf(snapshot.getTable()), TableState.State.ENABLED)) {<a name="line.805"></a> +<span class="sourceLineNo">806</span> throw new UnsupportedOperationException("Table '" +<a name="line.806"></a> +<span class="sourceLineNo">807</span> TableName.valueOf(snapshot.getTable()) + "' must be disabled in order to " +<a name="line.807"></a> +<span class="sourceLineNo">808</span> "perform a restore operation.");<a name="line.808"></a> +<span class="sourceLineNo">809</span> }<a name="line.809"></a> +<span class="sourceLineNo">810</span><a name="line.810"></a> +<span class="sourceLineNo">811</span> // call Coprocessor pre hook<a name="line.811"></a> +<span class="sourceLineNo">812</span> if (cpHost != null) {<a name="line.812"></a> +<span class="sourceLineNo">813</span> cpHost.preRestoreSnapshot(reqSnapshot, snapshotTableDesc);<a name="line.813"></a> +<span class="sourceLineNo">814</span> }<a name="line.814"></a> +<span class="sourceLineNo">815</span><a name="line.815"></a> +<span class="sourceLineNo">816</span> long procId;<a name="line.816"></a> +<span class="sourceLineNo">817</span> try {<a name="line.817"></a> +<span class="sourceLineNo">818</span> procId = restoreSnapshot(snapshot, snapshotTableDesc, nonceKey);<a name="line.818"></a> +<span class="sourceLineNo">819</span> } catch (IOException e) {<a name="line.819"></a> +<span class="sourceLineNo">820</span> LOG.error("Exception occurred while restoring the snapshot " + snapshot.getName()<a name="line.820"></a> +<span class="sourceLineNo">821</span> + " as table " + tableName.getNameAsString(), e);<a name="line.821"></a> +<span class="sourceLineNo">822</span> throw e;<a name="line.822"></a> +<span class="sourceLineNo">823</span> }<a name="line.823"></a> +<span class="sourceLineNo">824</span> LOG.info("Restore snapshot=" + snapshot.getName() + " as table=" + tableName);<a name="line.824"></a> +<span class="sourceLineNo">825</span><a name="line.825"></a> +<span class="sourceLineNo">826</span> if (cpHost != null) {<a name="line.826"></a> +<span class="sourceLineNo">827</span> 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class="sourceLineNo">839</span> * @param nonceKey unique identifier to prevent duplicated RPC<a name="line.839"></a> +<span class="sourceLineNo">840</span> * @return procId the ID of the restore snapshot procedure<a name="line.840"></a> +<span class="sourceLineNo">841</span> */<a name="line.841"></a> +<span class="sourceLineNo">842</span> private synchronized long restoreSnapshot(final SnapshotDescription snapshot,<a name="line.842"></a> +<span class="sourceLineNo">843</span> final HTableDescriptor hTableDescriptor, final NonceKey nonceKey)<a name="line.843"></a> +<span class="sourceLineNo">844</span> throws HBaseSnapshotException {<a name="line.844"></a> +<span class="sourceLineNo">845</span> final TableName tableName = hTableDescriptor.getTableName();<a name="line.845"></a> +<span class="sourceLineNo">846</span><a name="line.846"></a> +<span class="sourceLineNo">847</span> // make sure we aren't running a snapshot on the same table<a name="line.847"></a> +<span class="sourceLineNo">848</span> if (isTakingSnapshot(tableName)) {<a name="line.848"></a> +<span class="sourceLineNo">849</span> throw new RestoreSnapshotException("Snapshot in progress on the restore table=" + tableName);<a name="line.849"></a> +<span class="sourceLineNo">850</span> }<a name="line.850"></a> +<span class="sourceLineNo">851</span><a name="line.851"></a> +<span class="sourceLineNo">852</span> // make sure we aren't running a restore on the same table<a name="line.852"></a> +<span class="sourceLineNo">853</span> if (isRestoringTable(tableName)) {<a name="line.853"></a> +<span class="sourceLineNo">854</span> throw new RestoreSnapshotException("Restore already in progress on the table=" + tableName);<a name="line.854"></a> +<span class="sourceLineNo">855</span> }<a name="line.855"></a> +<span class="sourceLineNo">856</span><a name="line.856"></a> +<span class="sourceLineNo">857</span> try {<a name="line.857"></a> +<span class="sourceLineNo">858</span> long procId = master.getMasterProcedureExecutor().submitProcedure(<a name="line.858"></a> +<span class="sourceLineNo">859</span> new RestoreSnapshotProcedure(<a name="line.859"></a> +<span class="sourceLineNo">860</span> master.getMasterProcedureExecutor().getEnvironment(), hTableDescriptor, snapshot),<a name="line.860"></a> +<span class="sourceLineNo">861</span> nonceKey);<a name="line.861"></a> +<span class="sourceLineNo">862</span> this.restoreTableToProcIdMap.put(tableName, procId);<a name="line.862"></a> +<span class="sourceLineNo">863</span> return procId;<a name="line.863"></a> +<span class="sourceLineNo">864</span> } catch (Exception e) {<a name="line.864"></a> +<span class="sourceLineNo">865</span> String msg = "Couldn't restore the snapshot=" + ClientSnapshotDescriptionUtils.toString(<a name="line.865"></a> +<span class="sourceLineNo">866</span> snapshot) +<a name="line.866"></a> +<span class="sourceLineNo">867</span> " on table=" + tableName;<a name="line.867"></a> +<span class="sourceLineNo">868</span> LOG.error(msg, e);<a name="line.868"></a> +<span class="sourceLineNo">869</span> throw new RestoreSnapshotException(msg, e);<a name="line.869"></a> +<span class="sourceLineNo">870</span> }<a name="line.870"></a> +<span class="sourceLineNo">871</span> }<a name="line.871"></a> +<span class="sourceLineNo">872</span><a name="line.872"></a> +<span class="sourceLineNo">873</span> /**<a name="line.873"></a> +<span class="sourceLineNo">874</span> * Verify if the restore of the specified table is in progress.<a name="line.874"></a> +<span class="sourceLineNo">875</span> *<a name="line.875"></a> +<span class="sourceLineNo">876</span> * @param tableName table under restore<a name="line.876"></a> +<span class="sourceLineNo">877</span> * @return <tt>true</tt> if there is a restore in progress of the specified table.<a name="line.877"></a> +<span class="sourceLineNo">878</span> */<a name="line.878"></a> +<span class="sourceLineNo">879</span> private synchronized boolean isRestoringTable(final TableName tableName) {<a name="line.879"></a> +<span class="sourceLineNo">880</span> Long procId = this.restoreTableToProcIdMap.get(tableName);<a name="line.880"></a> +<span class="sourceLineNo">881</span> if (procId == null) {<a name="line.881"></a> +<span class="sourceLineNo">882</span> return false;<a name="line.882"></a> +<span class="sourceLineNo">883</span> }<a name="line.883"></a> +<span class="sourceLineNo">884</span> ProcedureExecutor<MasterProcedureEnv> procExec = master.getMasterProcedureExecutor();<a name="line.884"></a> +<span class="sourceLineNo">885</span> if (procExec.isRunning() && !procExec.isFinished(procId)) {<a name="line.885"></a> +<span class="sourceLineNo">886</span> return true;<a name="line.886"></a> +<span class="sourceLineNo">887</span> } else {<a name="line.887"></a> +<span class="sourceLineNo">888</span> this.restoreTableToProcIdMap.remove(tableName);<a name="line.888"></a> +<span class="sourceLineNo">889</span> return false;<a name="line.889"></a> +<span class="sourceLineNo">890</span> }<a name="line.890"></a> +<span class="sourceLineNo">891</span><a name="line.891"></a> +<span class="sourceLineNo">892</span> }<a name="line.892"></a> +<span class="sourceLineNo">893</span><a name="line.893"></a> +<span class="sourceLineNo">894</span> /**<a name="line.894"></a> +<span class="sourceLineNo">895</span> * Return the handler if it is currently live and has the same snapshot target name.<a name="line.895"></a> +<span class="sourceLineNo">896</span> * The handler is removed from the sentinels map if completed.<a name="line.896"></a> +<span class="sourceLineNo">897</span> * @param sentinels live handlers<a name="line.897"></a> +<span class="sourceLineNo">898</span> * @param snapshot snapshot description<a name="line.898"></a> +<span class="sourceLineNo">899</span> * @return null if doesn't match, else a live handler.<a name="line.899"></a> +<span class="sourceLineNo">900</span> */<a name="line.900"></a> +<span class="sourceLineNo">901</span> private synchronized SnapshotSentinel removeSentinelIfFinished(<a name="line.901"></a> +<span class="sourceLineNo">902</span> final Map<TableName, SnapshotSentinel> sentinels,<a name="line.902"></a> +<span class="sourceLineNo">903</span> final SnapshotDescription snapshot) {<a name="line.903"></a> +<span class="sourceLineNo">904</span> if (!snapshot.hasTable()) {<a name="line.904"></a> +<span class="sourceLineNo">905</span> return null;<a name="line.905"></a> +<span class="sourceLineNo">906</span> }<a name="line.906"></a> +<span class="sourceLineNo">907</span><a name="line.907"></a> +<span class="sourceLineNo">908</span> TableName snapshotTable = TableName.valueOf(snapshot.getTable());<a name="line.908"></a> +<span class="sourceLineNo">909</span> SnapshotSentinel h = sentinels.get(snapshotTable);<a name="line.909"></a> +<span class="sourceLineNo">910</span> if (h == null) {<a name="line.910"></a> +<span class="sourceLineNo">911</span> return null;<a name="line.911"></a> +<span class="sourceLineNo">912</span> }<a name="line.912"></a> +<span class="sourceLineNo">913</span><a name="line.913"></a> +<span class="sourceLineNo">914</span> if (!h.getSnapshot().getName().equals(snapshot.getName())) {<a name="line.914"></a> +<span class="sourceLineNo">915</span> // specified snapshot is to the one currently running<a name="line.915"></a> +<span class="sourceLineNo">916</span> return null;<a name="line.916"></a> +<span class="sourceLineNo">917</span> }<a name="line.917"></a> +<span class="sourceLineNo">918</span><a name="line.918"></a> +<span class="sourceLineNo">919</span> // Remove from the "in-progress" list once completed<a name="line.919"></a> +<span class="sourceLineNo">920</span> if (h.isFinished()) {<a name="line.920"></a> +<span class="sourceLineNo">921</span> sentinels.remove(snapshotTable);<a name="line.921"></a> +<span class="sourceLineNo">922</span> }<a name="line.922"></a> +<span class="sourceLineNo">923</span><a name="line.923"></a> +<span class="sourceLineNo">924</span> return h;<a name="line.924"></a> +<span class="sourceLineNo">925</span> }<a name="line.925"></a> +<span class="sourceLineNo">926</span><a name="line.926"></a> +<span class="sourceLineNo">927</span> /**<a name="line.927"></a> +<span class="sourceLineNo">928</span> * Removes "abandoned" snapshot/restore requests.<a name="line.928"></a> +<span class="sourceLineNo">929</span> * As part of the HBaseAdmin snapshot/restore API the operation status is checked until completed,<a name="line.929"></a> +<span class="sourceLineNo">930</span> * and the in-progress maps are cleaned up when the status of a completed task is requested.<a name="line.930"></a> +<span class="sourceLineNo">931</span> * To avoid having sentinels staying around for long time if something client side is failed,<a name="line.931"></a> +<span class="sourceLineNo">932</span> * each operation tries to clean up the in-progress maps sentinels finished from a long time.<a name="line.932"></a> +<span class="sourceLineNo">933</span> */<a name="line.933"></a> +<span class="sourceLineNo">934</span> private void cleanupSentinels() {<a name="line.934"></a> +<span class="sourceLineNo">935</span> cleanupSentinels(this.snapshotHandlers);<a name="line.935"></a> +<span class="sourceLineNo">936</span> cleanupCompletedRestoreInMap();<a name="line.936"></a> +<span class="sourceLineNo">937</span> }<a name="line.937"></a> +<span class="sourceLineNo">938</span><a name="line.938"></a> +<span class="sourceLineNo">939</span> /**<a name="line.939"></a> +<span class="sourceLineNo">940</span> * Remove the sentinels that are marked as finished and the completion time<a name="line.940"></a> +<span class="sourceLineNo">941</span> * has exceeded the removal timeout.<a name="line.941"></a> +<span class="sourceLineNo">942</span> * @param sentinels map of sentinels to clean<a name="line.942"></a> +<span class="sourceLineNo">943</span> */<a name="line.943"></a> +<span class="sourceLineNo">944</span> private synchronized void cleanupSentinels(final Map<TableName, SnapshotSentinel> sentinels) {<a name="line.944"></a> +<span class="sourceLineNo">945</span> long currentTime = EnvironmentEdgeManager.currentTime();<a name="line.945"></a> +<span class="sourceLineNo">946</span> Iterator<Map.Entry<TableName, SnapshotSentinel>> it =<a name="line.946"></a> +<span class="sourceLineNo">947</span> sentinels.entrySet().iterator();<a name="line.947"></a> +<span class="sourceLineNo">948</span> while (it.hasNext()) {<a name="line.948"></a> +<span class="sourceLineNo">949</span> Map.Entry<TableName, SnapshotSentinel> entry = it.next();<a name="line.949"></a> +<span class="sourceLineNo">950</span> SnapshotSentinel sentinel = entry.getValue();<a name="line.950"></a> +<span class="sourceLineNo">951</span> if (sentinel.isFinished() &&<a name="line.951"></a> +<span class="sourceLineNo">952</span> (currentTime - sentinel.getCompletionTimestamp()) > SNAPSHOT_SENTINELS_CLEANUP_TIMEOUT)<a name="line.952"></a> +<span class="sourceLineNo">953</span> {<a name="line.953"></a> +<span class="sourceLineNo">954</span> it.remove();<a name="line.954"></a> +<span class="sourceLineNo">955</span> }<a name="line.955"></a> +<span class="sourceLineNo">956</span> }<a name="line.956"></a> +<span class="sourceLineNo">957</span> }<a name="line.957"></a> +<span class="sourceLineNo">958</span><a name="line.958"></a> +<span class="sourceLineNo">959</span> /**<a name="line.959"></a> +<span class="sourceLineNo">960</span> * Remove the procedures that are marked as finished<a name="line.960"></a> +<span class="sourceLineNo">961</span> */<a name="line.961"></a> +<span class="sourceLineNo">962</span> private synchronized void cleanupCompletedRestoreInMap() {<a name="line.962"></a> +<span class="sourceLineNo">963</span> ProcedureExecutor<MasterProcedureEnv> procExec = master.getMasterProcedureExecutor();<a name="line.963"></a> +<span class="sourceLineNo">964</span> Iterator<Map.Entry<TableName, Long>> it = restoreTableToProcIdMap.entrySet().iterator();<a name="line.964"></a> +<span class="sourceLineNo">965</span> while (it.hasNext()) {<a name="line.965"></a> +<span class="sourceLineNo">966</span> Map.Entry<TableName, Long> entry = it.next();<a name="line.966"></a> +<span class="sourceLineNo">967</span> Long procId = entry.getValue();<a name="line.967"></a> +<span class="sourceLineNo">968</span> if (procExec.isRunning() && procExec.isFinished(procId)) {<a name="line.968"></a> +<span class="sourceLineNo">969</span> it.remove();<a name="line.969"></a> +<span class="sourceLineNo">970</span> }<a name="line.970"></a> +<span class="sourceLineNo">971</span> }<a name="line.971"></a> +<span class="sourceLineNo">972</span> }<a name="line.972"></a> +<span class="sourceLineNo">973</span><a name="line.973"></a> +<span class="sourceLineNo">974</span> //<a name="line.974"></a> +<span class="sourceLineNo">975</span> // Implementing Stoppable interface<a name="line.975"></a> +<span class="sourceLineNo">976</span> //<a name="line.976"></a> +<span class="sourceLineNo">977</span><a name="line.977"></a> +<span class="sourceLineNo">978</span> @Override<a name="line.978"></a> +<span class="sourceLineNo">979</span> public void stop(String why) {<a name="line.979"></a> +<span class="sourceLineNo">980</span> // short circuit<a name="line.980"></a> +<span class="sourceLineNo">981</span> if (this.stopped) return;<a name="line.981"></a> +<span class="sourceLineNo">982</span> // make sure we get stop<a name="line.982"></a> +<span class="sourceLineNo">983</span> this.stopped = true;<a name="line.983"></a> +<span class="sourceLineNo">984</span> // pass the stop onto take snapshot handlers<a name="line.984"></a> +<span class="sourceLineNo">985</span> for (SnapshotSentinel snapshotHandler: this.snapshotHandlers.values()) {<a name="line.985"></a> +<span class="sourceLineNo">986</span> snapshotHandler.cancel(why);<a name="line.986"></a> +<span class="sourceLineNo">987</span> }<a name="line.987"></a> +<span class="sourceLineNo">988</span><a name="line.988"></a> +<span class="sourceLineNo">989</span> try {<a name="line.989"></a> +<span class="sourceLineNo">990</span> if (coordinator != null) {<a name="line.990"></a> +<span class="sourceLineNo">991</span> coordinator.close();<a name="line.991"></a> +<span class="sourceLineNo">992</span> }<a name="line.992"></a> +<span class="sourceLineNo">993</span> } catch (IOException e) {<a name="line.993"></a> +<span class="sourceLineNo">994</span> LOG.error("stop ProcedureCoordinator error", e);<a name="line.994"></a> +<span class="sourceLineNo">995</span> }<a name="line.995"></a> +<span class="sourceLineNo">996</span> }<a name="line.996"></a> +<span class="sourceLineNo">997</span><a name="line.997"></a> +<span class="sourceLineNo">998</span> @Override<a name="line.998"></a> +<span class="sourceLineNo">999</span> public boolean isStopped() {<a 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(!this.isSnapshotSupported) {<a name="line.1009"></a> +<span class="sourceLineNo">1010</span> throw new UnsupportedOperationException(<a name="line.1010"></a> +<span class="sourceLineNo">1011</span> "To use snapshots, You must add to the hbase-site.xml of the HBase Master: '" +<a name="line.1011"></a> +<span class="sourceLineNo">1012</span> HBASE_SNAPSHOT_ENABLED + "' property with value 'true'.");<a name="line.1012"></a> +<span class="sourceLineNo">1013</span> }<a name="line.1013"></a> +<span class="sourceLineNo">1014</span> }<a name="line.1014"></a> +<span class="sourceLineNo">1015</span><a name="line.1015"></a> +<span class="sourceLineNo">1016</span> /**<a name="line.1016"></a> +<span class="sourceLineNo">1017</span> * Called at startup, to verify if snapshot operation is supported, and to avoid<a name="line.1017"></a> +<span class="sourceLineNo">1018</span> * starting the master if there're snapshots present but the cleaners needed are missing.<a name="line.1018"></a> +<span class="sourceLineNo">1019</span> * Otherwise we can end up with snapshot data loss.<a name="line.1019"></a> +<span class="sourceLineNo">1020</span> * @param conf The {@link Configuration} object to use<a name="line.1020"></a> +<span class="sourceLineNo">1021</span> * @param mfs The MasterFileSystem to use<a name="line.1021"></a> +<span class="sourceLineNo">1022</span> * @throws IOException in case of file-system operation failure<a name="line.1022"></a> +<span class="sourceLineNo">1023</span> * @throws UnsupportedOperationException in case cleaners are missing and<a name="line.1023"></a> +<span class="sourceLineNo">1024</span> * there're snapshot in the system<a name="line.1024"></a> +<span class="sourceLineNo">1025</span> */<a name="line.1025"></a> +<span class="sourceLineNo">1026</span> private void checkSnapshotSupport(final Configuration conf, final MasterFileSystem mfs)<a name="line.1026"></a> +<span class="sourceLineNo">1027</span> throws IOException, UnsupportedOperationException {<a name="line.1027"></a> +<span class="sourceLineNo">1028</span> // Verify if snapshot is disabled by the user<a name="line.1028"></a> +<span class="sourceLineNo">1029</span> String enabled = conf.get(HBASE_SNAPSHOT_ENABLED);<a name="line.1029"></a> +<span class="sourceLineNo">1030</span> boolean snapshotEnabled = conf.getBoolean(HBASE_SNAPSHOT_ENABLED, false);<a name="line.1030"></a> +<span class="sourceLineNo">1031</span> boolean userDisabled = (enabled != null && enabled.trim().length() > 0 && !snapshotEnabled);<a name="line.1031"></a> +<span class="sourceLineNo">1032</span><a name="line.1032"></a> +<span class="sourceLineNo">1033</span> // Extract cleaners from conf<a name="line.1033"></a> +<span class="sourceLineNo">1034</span> Set<String> hfileCleaners = new HashSet<>();<a name="line.1034"></a> +<span class="sourceLineNo">1035</span> String[] cleaners = conf.getStrings(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS);<a name="line.1035"></a> +<span class="sourceLineNo">1036</span> if (cleaners != null) Collections.addAll(hfileCleaners, cleaners);<a name="line.1036"></a> +<span class="sourceLineNo">1037</span><a name="line.1037"></a> +<span class="sourceLineNo">1038</span> Set<String> logCleaners = new HashSet<>();<a name="line.1038"></a> +<span class="sourceLineNo">1039</span> cleaners = conf.getStrings(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS);<a name="line.1039"></a> +<span class="sourceLineNo">1040</span> if (cleaners != null) Collections.addAll(logCleaners, cleaners);<a name="line.1040"></a> +<span class="sourceLineNo">1041</span><a name="line.1041"></a> +<span class="sourceLineNo">1042</span> // check if an older version of snapshot directory was present<a name="line.1042"></a> +<span class="sourceLineNo">1043</span> Path oldSnapshotDir = new Path(mfs.getRootDir(), HConstants.OLD_SNAPSHOT_DIR_NAME);<a name="line.1043"></a> +<span class="sourceLineNo">1044</span> FileSystem fs = mfs.getFileSystem();<a name="line.1044"></a> +<span class="sourceLineNo">1045</span> List<SnapshotDescription> ss = getCompletedSnapshots(new Path(rootDir, oldSnapshotDir));<a name="line.1045"></a> +<span class="sourceLineNo">1046</span> if (ss != null && !ss.isEmpty()) {<a name="line.1046"></a> +<span class="sourceLineNo">1047</span> LOG.error("Snapshots from an earlier release were found under: " + oldSnapshotDir);<a name="line.1047"></a> +<span class="sourceLineNo">1048</span> LOG.error("Please rename the directory as " + HConstants.SNAPSHOT_DIR_NAME);<a name="line.1048"></a> +<span class="sourceLineNo">1049</span> }<a name="line.1049"></a> +<span class="sourceLineNo">1050</span><a name="line.1050"></a> +<span class="sourceLineNo">1051</span> // If the user has enabled the snapshot, we force the cleaners to be present<a name="line.1051"></a> +<span class="sourceLineNo">1052</span> // otherwise we still need to check if cleaners are enabled or not and verify<a name="line.1052"></a> +<span class="sourceLineNo">1053</span> // that there're no snapshot in the .snapshot folder.<a name="line.1053"></a> +<span class="sourceLineNo">1054</span> if (snapshotEnabled) {<a name="line.1054"></a> +<span class="sourceLineNo">1055</span> // Inject snapshot cleaners, if snapshot.enable is true<a name="line.1055"></a> +<span class="sourceLineNo">1056</span> hfileCleaners.add(SnapshotHFileCleaner.class.getName());<a name="line.1056"></a> +<span class="sourceLineNo">1057</span> hfileCleaners.add(HFileLinkCleaner.class.getName());<a name="line.1057"></a> +<span class="sourceLineNo">1058</span><a name="line.1058"></a> +<span class="sourceLineNo">1059</span> // Set cleaners conf<a name="line.1059"></a> +<span class="sourceLineNo">1060</span> conf.setStrings(HFileCleaner.MASTER_HFILE_CLEANER_PLUGINS,<a name="line.1060"></a> +<span class="sourceLineNo">1061</span> hfileCleaners.toArray(new String[hfileCleaners.size()]));<a name="line.1061"></a> +<span class="sourceLineNo">1062</span> conf.setStrings(HConstants.HBASE_MASTER_LOGCLEANER_PLUGINS,<a name="line.1062"></a> +<span class="sourceLineNo">1063</span> logCleaners.toArray(new String[logCleaners.size()]));<a name="line.1063"></a> +<span class="sourceLineNo">1064</span> } else {<a name="line.1064"></a> +<span class="sourceLineNo">1065</span> // Verify if cleaners are present<a name="line.1065"></a> +<span class="sourceLineNo">1066</span> snapshotEnabled =<a name="line.1066"></a> +<span class="sourceLineNo">1067</span> hfileCleaners.contains(SnapshotHFileCleaner.class.getName()) &&<a name="line.1067"></a> +<span class="sourceLineNo">1068</span> hfileCleaners.contains(HFileLinkCleaner.class.getName());<a name="line.1068"></a> +<span class="sourceLineNo">1069</span><a name="line.1069"></a> +<span class="sourceLineNo">1070</span> // Warn if the cleaners are enabled but the snapshot.enabled property is false/not set.<a name="line.1070"></a> +<span class="sourceLineNo">1071</span> if (snapshotEnabled) {<a name="line.1071"></a> +<span class="sourceLineNo">1072</span> LOG.warn("Snapshot log and hfile cleaners are present in the configuration, " +<a name="line.1072"></a> +<span class="sourceLineNo">1073</span> "but the '" + HBASE_SNAPSHOT_ENABLED + "' property " +<a name="line.1073"></a> +<span class="sourceLineNo">1074</span> (userDisabled ? "is set to 'false'." : "is not set."));<a name="line.1074"></a> +<span class="sourceLineNo">1075</span> }<a name="line.1075"></a> +<span class="sourceLineNo">1076</span> }<a name="line.1076"></a> +<span class="sourceLineNo">1077</span><a name="line.1077"></a> +<span class="sourceLineNo">1078</span> // Mark snapshot feature as enabled if cleaners are present and user has not disabled it.<a name="line.1078"></a> +<span class="sourceLineNo">1079</span> this.isSnapshotSupported = snapshotEnabled && !userDisabled;<a name="line.1079"></a> +<span class="sourceLineNo">1080</span><a name="line.1080"></a> +<span class="sourceLineNo">1081</span> // If cleaners are not enabled, verify that there're no snapshot in the .snapshot folder<a name="line.1081"></a> +<span class="sourceLineNo">1082</span> // otherwise we end up with snapshot data loss.<a name="line.1082"></a> +<span class="sourceLineNo">1083</span> if (!snapshotEnabled) {<a name="line.1083"></a> +<span class="sourceLineNo">1084</span> LOG.info("Snapshot feature is not enabled, missing log and hfile cleaners.");<a name="line.1084"></a> +<span class="sourceLineNo">1085</span> Path snapshotDir = SnapshotDescriptionUtils.getSnapshotsDir(mfs.getRootDir());<a name="line.1085"></a> +<span class="sourceLineNo">1086</span> if (fs.exists(snapshotDir)) {<a name="line.1086"></a> +<span class="sourceLineNo">1087</span> FileStatus[] snapshots = FSUtils.listStatus(fs, snapshotDir,<a name="line.1087"></a> +<span class="sourceLineNo">1088</span> new SnapshotDescriptionUtils.CompletedSnaphotDirectoriesFilter(fs));<a name="line.1088"></a> +<span class="sourceLineNo">1089</span> if (snapshots != null) {<a name="line.1089"></a> +<span class="sourceLineNo">1090</span> LOG.error("Snapshots are present, but cleaners are not enabled.");<a name="line.1090"></a> +<span class="sourceLineNo">1091</span> checkSnapshotSupport();<a name="line.1091"></a> +<span class="sourceLineNo">1092</span> }<a name="line.1092"></a> +<span class="sourceLineNo">1093</span> }<a name="line.1093"></a> +<span class="sourceLineNo">1094</span> }<a name="line.1094"></a> +<span class="sourceLineNo">1095</span> }<a name="line.1095"></a> +<span class="sourceLineNo">1096</span><a name="line.1096"></a> +<span class="sourceLineNo">1097</span> @Override<a name="line.1097"></a> +<span class="sourceLineNo">1098</span> public void initialize(MasterServices master, MetricsMaster metricsMaster) throws KeeperException,<a name="line.1098"></a> +<span class="sourceLineNo">1099</span> IOException, UnsupportedOperationException {<a name="line.1099"></a> +<span class="sourceLineNo">1100</span> this.master = master;<a name="line.1100"></a> +<span class="sourceLineNo">1101</span><a name="line.1101"></a> +<span class="sourceLineNo">1102</span> this.rootDir = master.getMasterFileSystem().getRootDir();<a name="line.1102"></a> +<span class="sourceLineNo">1103</span> checkSnapshotSupport(master.getConfiguration(), master.getMasterFileSystem());<a name="line.1103"></a> +<span class="sourceLineNo">1104</span><a name="line.1104"></a> +<span class="sourceLineNo">1105</span> // get the configuration for the coordinator<a name="line.1105"></a> +<span class="sourceLineNo">1106</span> Configuration conf = master.getConfiguration();<a name="line.1106"></a> +<span class="sourceLineNo">1107</span> long wakeFrequency = conf.getInt(SNAPSHOT_WAKE_MILLIS_KEY, SNAPSHOT_WAKE_MILLIS_DEFAULT);<a name="line.1107"></a> +<span class="sourceLineNo">1108</span> long timeoutMillis = Math.max(conf.getLong(SnapshotDescriptionUtils.SNAPSHOT_TIMEOUT_MILLIS_KEY,<a name="line.1108"></a> +<span class="sourceLineNo">1109</span> SnapshotDescriptionUtils.SNAPSHOT_TIMEOUT_MILLIS_DEFAULT),<a name="line.1109"></a> +<span class="sourceLineNo">1110</span> conf.getLong(SnapshotDescriptionUtils.MASTER_SNAPSHOT_TIMEOUT_MILLIS,<a name="line.1110"></a> +<span class="sourceLineNo">1111</span> SnapshotDescriptionUtils.DEFAULT_MAX_WAIT_TIME));<a name="line.1111"></a> +<span class="sourceLineNo">1112</span> int opThreads = conf.getInt(SNAPSHOT_POOL_THREADS_KEY, SNAPSHOT_POOL_THREADS_DEFAULT);<a name="line.1112"></a> +<span class="sourceLineNo">1113</span><a name="line.1113"></a> +<span class="sourceLineNo">1114</span> // setup the default procedure coordinator<a name="line.1114"></a> +<span class="sourceLineNo">1115</span> String name = master.getServerName().toString();<a name="line.1115"></a> +<span class="sourceLineNo">1116</span> ThreadPoolExecutor tpool = ProcedureCoordinator.defaultPool(name, opThreads);<a name="line.1116"></a> +<span class="sourceLineNo">1117</span> ProcedureCoordinatorRpcs comms = new ZKProcedureCoordinator(<a name="line.1117"></a> +<span class="sourceLineNo">1118</span> master.getZooKeeper(), SnapshotManager.ONLINE_SNAPSHOT_CONTROLLER_DESCRIPTION, name);<a name="line.1118"></a> +<span class="sourceLineNo">1119</span><a name="line.1119"></a> +<span class="sourceLineNo">1120</span> this.coordinator = new ProcedureCoordinator(comms, tpool, timeoutMillis, wakeFrequency);<a name="line.1120"></a> +<span class="sourceLineNo">1121</span> this.executorService = master.getExecutorService();<a name="line.1121"></a> +<span class="sourceLineNo">1122</span> resetTempDir();<a name="line.1122"></a> +<span class="sourceLineNo">1123</span> }<a name="line.1123"></a> +<span class="sourceLineNo">1124</span><a name="line.1124"></a> +<span class="sourceLineNo">1125</span> @Override<a name="line.1125"></a> +<span class="sourceLineNo">1126</span> public String getProcedureSignature() {<a name="line.1126"></a> +<span class="sourceLineNo">1127</span> return ONLINE_SNAPSHOT_CONTROLLER_DESCRIPTION;<a name="line.1127"></a> +<span class="sourceLineNo">1128</span> }<a name="line.1128"></a> +<span class="sourceLineNo">1129</span><a name="line.1129"></a> +<span class="sourceLineNo">1130</span> @Override<a name="line.1130"></a> +<span class="sourceLineNo">1131</span> public void execProcedure(ProcedureDescription desc) throws IOException {<a name="line.1131"></a> +<span class="sourceLineNo">1132</span> takeSnapshot(toSnapshotDescription(desc));<a name="line.1132"></a> +<span class="sourceLineNo">1133</span> }<a name="line.1133"></a> +<span class="sourceLineNo">1134</span><a name="line.1134"></a> +<span class="sourceLineNo">1135</span> @Override<a name="line.1135"></a> +<span class="sourceLineNo">1136</span> public boolean isProcedureDone(ProcedureDescription desc) throws IOException {<a name="line.1136"></a> +<span class="sourceLineNo">1137</span> return isSnapshotDone(toSnapshotDescription(desc));<a name="line.1137"></a> +<span class="sourceLineNo">1138</span> }<a name="line.1138"></a> +<span class="sourceLineNo">1139</span><a name="line.1139"></a> +<span class="sourceLineNo">1140</span> private SnapshotDescription toSnapshotDescription(ProcedureDescription desc)<a name="line.1140"></a> +<span class="sourceLineNo">1141</span> throws IOException {<a name="line.1141"></a> +<span class="sourceLineNo">1142</span> SnapshotDescription.Builder builder = SnapshotDescription.newBuilder();<a name="line.1142"></a> +<span class="sourceLineNo">1143</span> if (!desc.hasInstance()) {<a name="line.1143"></a> +<span class="sourceLineNo">1144</span> throw new IOException("Snapshot name is not defined: " + desc.toString());<a name="line.1144"></a> +<span class="sourceLineNo">1145</span> }<a name="line.1145"></a> +<span class="sourceLineNo">1146</span> String snapshotName = desc.getInstance();<a name="line.1146"></a> +<span class="sourceLineNo">1147</span> List<NameStringPair> props = desc.getConfigurationList();<a name="line.1147"></a> +<span class="sourceLineNo">1148</span> String table = null;<a name="line.1148"></a> +<span class="sourceLineNo">1149</span> for (NameStringPair prop : props) {<a name="line.1149"></a> +<span class="sourceLineNo">1150</span> if ("table".equalsIgnoreCase(prop.getName())) {<a name="line.1150"></a> +<span class="sourceLineNo">1151</span> table = prop.getValue();<a name="line.1151"></a> +<span class="sourceLineNo">1152</span> }<a name="line.1152"></a> +<span class="sourceLineNo">1153</span> }<a name="line.1153"></a> +<span class="sourceLineNo">1154</span> if (table == null) {<a name="line.1154"></a> +<span class="sourceLineNo">1155</span> throw new IOException("Snapshot table is not defined: " + desc.toString());<a name="line.1155"></a> +<span class="sourceLineNo">1156</span> }<a name="line.1156"></a> +<span class="sourceLineNo">1157</span> TableName tableName = TableName.valueOf(table);<a name="line.1157"></a> +<span class="sourceLineNo">1158</span> builder.setTable(tableName.getNameAsString());<a name="line.1158"></a> +<span class="sourceLineNo">1159</span> builder.setName(snapshotName);<a name="line.1159"></a> +<span class="sourceLineNo">1160</span> builder.setType(SnapshotDescription.Type.FLUSH);<a name="line.1160"></a> +<span class="sourceLineNo">1161</span> return builder.build();<a name="line.1161"></a> +<span class="sourceLineNo">1162</span> }<a name="line.1162"></a> +<span class="sourceLineNo">1163</span><a name="line.1163"></a> +<span class="sourceLineNo">1164</span> public KeyLocker<String> getLocks() {<a name="line.1164"></a> +<span class="sourceLineNo">1165</span> return locks;<a name="line.1165"></a> +<span class="sourceLineNo">1166</span> }<a name="line.1166"></a> +<span class="sourceLineNo">1167</span><a name="line.1167"></a> +<span class="sourceLineNo">1168</span>}<a name="line.1168"></a>
