Repository: hbase-site Updated Branches: refs/heads/asf-site cddd30637 -> 3469cbc0b
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/3469cbc0/devapidocs/src-html/org/apache/hadoop/hbase/replication/ZKReplicationQueueStorage.html ---------------------------------------------------------------------- diff --git a/devapidocs/src-html/org/apache/hadoop/hbase/replication/ZKReplicationQueueStorage.html b/devapidocs/src-html/org/apache/hadoop/hbase/replication/ZKReplicationQueueStorage.html index 338eb9c..55713d8 100644 --- a/devapidocs/src-html/org/apache/hadoop/hbase/replication/ZKReplicationQueueStorage.html +++ b/devapidocs/src-html/org/apache/hadoop/hbase/replication/ZKReplicationQueueStorage.html @@ -401,10 +401,10 @@ <span class="sourceLineNo">393</span> " failed when creating the node for " + destServerName,<a name="line.393"></a> <span class="sourceLineNo">394</span> e);<a name="line.394"></a> <span class="sourceLineNo">395</span> }<a name="line.395"></a> -<span class="sourceLineNo">396</span> try {<a name="line.396"></a> -<span class="sourceLineNo">397</span> String oldQueueNode = getQueueNode(sourceServerName, queueId);<a name="line.397"></a> -<span class="sourceLineNo">398</span> List<String> wals = ZKUtil.listChildrenNoWatch(zookeeper, oldQueueNode);<a name="line.398"></a> -<span class="sourceLineNo">399</span> String newQueueId = queueId + "-" + sourceServerName;<a name="line.399"></a> +<span class="sourceLineNo">396</span> String newQueueId = queueId + "-" + sourceServerName;<a name="line.396"></a> +<span class="sourceLineNo">397</span> try {<a name="line.397"></a> +<span class="sourceLineNo">398</span> String oldQueueNode = getQueueNode(sourceServerName, queueId);<a name="line.398"></a> +<span class="sourceLineNo">399</span> List<String> wals = ZKUtil.listChildrenNoWatch(zookeeper, oldQueueNode);<a name="line.399"></a> <span class="sourceLineNo">400</span> if (CollectionUtils.isEmpty(wals)) {<a name="line.400"></a> <span class="sourceLineNo">401</span> ZKUtil.deleteNodeFailSilent(zookeeper, oldQueueNode);<a name="line.401"></a> <span class="sourceLineNo">402</span> LOG.info("Removed empty {}/{}", sourceServerName, queueId);<a name="line.402"></a> @@ -435,254 +435,255 @@ <span class="sourceLineNo">427</span> return new Pair<>(newQueueId, logQueue);<a name="line.427"></a> <span class="sourceLineNo">428</span> } catch (NoNodeException | NodeExistsException | NotEmptyException | BadVersionException e) {<a name="line.428"></a> <span class="sourceLineNo">429</span> // Multi call failed; it looks like some other regionserver took away the logs.<a name="line.429"></a> -<span class="sourceLineNo">430</span> // These exceptions mean that zk tells us the request can not be execute so it is safe to just<a name="line.430"></a> -<span class="sourceLineNo">431</span> // return a null. 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name="line.440"></a> -<span class="sourceLineNo">441</span> @Override<a name="line.441"></a> -<span class="sourceLineNo">442</span> public void removeReplicatorIfQueueIsEmpty(ServerName serverName) throws ReplicationException {<a name="line.442"></a> -<span class="sourceLineNo">443</span> try {<a name="line.443"></a> -<span class="sourceLineNo">444</span> ZKUtil.deleteNodeFailSilent(zookeeper, getRsNode(serverName));<a name="line.444"></a> -<span class="sourceLineNo">445</span> } catch (NotEmptyException e) {<a name="line.445"></a> -<span class="sourceLineNo">446</span> // keep silence to avoid logging too much.<a name="line.446"></a> -<span class="sourceLineNo">447</span> } catch (KeeperException e) {<a name="line.447"></a> -<span class="sourceLineNo">448</span> throw new ReplicationException("Failed to remove replicator for " + serverName, e);<a name="line.448"></a> -<span class="sourceLineNo">449</span> }<a name="line.449"></a> -<span class="sourceLineNo">450</span> }<a name="line.450"></a> -<span class="sourceLineNo">451</span><a name="line.451"></a> -<span class="sourceLineNo">452</span> private List<ServerName> getListOfReplicators0() throws KeeperException {<a name="line.452"></a> -<span class="sourceLineNo">453</span> List<String> children = ZKUtil.listChildrenNoWatch(zookeeper, queuesZNode);<a name="line.453"></a> -<span class="sourceLineNo">454</span> if (children == null) {<a name="line.454"></a> -<span class="sourceLineNo">455</span> children = Collections.emptyList();<a name="line.455"></a> -<span class="sourceLineNo">456</span> }<a name="line.456"></a> -<span class="sourceLineNo">457</span> return children.stream().map(ServerName::parseServerName).collect(toList());<a name="line.457"></a> -<span class="sourceLineNo">458</span> }<a name="line.458"></a> -<span class="sourceLineNo">459</span><a name="line.459"></a> -<span class="sourceLineNo">460</span> @Override<a name="line.460"></a> -<span class="sourceLineNo">461</span> public 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name="line.537"></a> -<span class="sourceLineNo">538</span> private String getHFileRefsPeerNode(String peerId) {<a name="line.538"></a> -<span class="sourceLineNo">539</span> return ZNodePaths.joinZNode(hfileRefsZNode, peerId);<a name="line.539"></a> -<span class="sourceLineNo">540</span> }<a name="line.540"></a> -<span class="sourceLineNo">541</span><a name="line.541"></a> -<span class="sourceLineNo">542</span> private String getHFileNode(String peerNode, String fileName) {<a name="line.542"></a> -<span class="sourceLineNo">543</span> return ZNodePaths.joinZNode(peerNode, fileName);<a name="line.543"></a> -<span class="sourceLineNo">544</span> }<a name="line.544"></a> -<span class="sourceLineNo">545</span><a name="line.545"></a> -<span class="sourceLineNo">546</span> @Override<a name="line.546"></a> -<span class="sourceLineNo">547</span> public void addPeerToHFileRefs(String peerId) throws ReplicationException {<a name="line.547"></a> -<span class="sourceLineNo">548</span> String 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Collections.emptySet();<a name="line.660"></a> -<span class="sourceLineNo">661</span> }<a name="line.661"></a> -<span class="sourceLineNo">662</span> Set<String> hfileRefs = new HashSet<>();<a name="line.662"></a> -<span class="sourceLineNo">663</span> for (String peer : peers) {<a name="line.663"></a> -<span class="sourceLineNo">664</span> hfileRefs.addAll(getReplicableHFiles0(peer));<a name="line.664"></a> -<span class="sourceLineNo">665</span> }<a name="line.665"></a> -<span class="sourceLineNo">666</span> int v1 = getHFileRefsZNodeCversion();<a name="line.666"></a> -<span class="sourceLineNo">667</span> if (v0 == v1) {<a name="line.667"></a> -<span class="sourceLineNo">668</span> return hfileRefs;<a name="line.668"></a> -<span class="sourceLineNo">669</span> }<a name="line.669"></a> -<span class="sourceLineNo">670</span> LOG.debug("Replication hfile references node cversion changed from %d to %d, retry = %d",<a name="line.670"></a> -<span class="sourceLineNo">671</span> v0, v1, retry);<a name="line.671"></a> -<span class="sourceLineNo">672</span> }<a name="line.672"></a> -<span class="sourceLineNo">673</span> } catch (KeeperException e) {<a name="line.673"></a> -<span class="sourceLineNo">674</span> throw new ReplicationException("Failed to get all hfile refs", e);<a name="line.674"></a> -<span class="sourceLineNo">675</span> }<a name="line.675"></a> -<span class="sourceLineNo">676</span> }<a name="line.676"></a> -<span class="sourceLineNo">677</span>}<a name="line.677"></a> +<span class="sourceLineNo">430</span> // These exceptions mean that zk tells us the request can not be execute. 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class="sourceLineNo">461</span> @Override<a name="line.461"></a> +<span class="sourceLineNo">462</span> public List<ServerName> getListOfReplicators() throws ReplicationException {<a name="line.462"></a> +<span class="sourceLineNo">463</span> try {<a name="line.463"></a> +<span class="sourceLineNo">464</span> return getListOfReplicators0();<a name="line.464"></a> +<span class="sourceLineNo">465</span> } catch (KeeperException e) {<a name="line.465"></a> +<span class="sourceLineNo">466</span> throw new ReplicationException("Failed to get list of replicators", e);<a name="line.466"></a> +<span class="sourceLineNo">467</span> }<a name="line.467"></a> +<span class="sourceLineNo">468</span> }<a name="line.468"></a> +<span class="sourceLineNo">469</span><a name="line.469"></a> +<span class="sourceLineNo">470</span> private List<String> getWALsInQueue0(ServerName serverName, String queueId)<a name="line.470"></a> +<span class="sourceLineNo">471</span> throws KeeperException {<a 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class="sourceLineNo">482</span> } catch (KeeperException e) {<a name="line.482"></a> +<span class="sourceLineNo">483</span> throw new ReplicationException(<a name="line.483"></a> +<span class="sourceLineNo">484</span> "Failed to get wals in queue (serverName=" + serverName + ", queueId=" + queueId + ")",<a name="line.484"></a> +<span class="sourceLineNo">485</span> 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> +<span class="sourceLineNo">489</span> private List<String> getAllQueues0(ServerName serverName) throws KeeperException {<a name="line.489"></a> +<span class="sourceLineNo">490</span> List<String> children = ZKUtil.listChildrenNoWatch(zookeeper, getRsNode(serverName));<a name="line.490"></a> +<span class="sourceLineNo">491</span> return children != null ? children : Collections.emptyList();<a 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class="sourceLineNo">503</span> // will be overridden in UTs<a name="line.503"></a> +<span class="sourceLineNo">504</span> @VisibleForTesting<a name="line.504"></a> +<span class="sourceLineNo">505</span> protected int getQueuesZNodeCversion() throws KeeperException {<a name="line.505"></a> +<span class="sourceLineNo">506</span> Stat stat = new Stat();<a name="line.506"></a> +<span class="sourceLineNo">507</span> ZKUtil.getDataNoWatch(this.zookeeper, this.queuesZNode, stat);<a name="line.507"></a> +<span class="sourceLineNo">508</span> return stat.getCversion();<a name="line.508"></a> +<span class="sourceLineNo">509</span> }<a name="line.509"></a> +<span class="sourceLineNo">510</span><a name="line.510"></a> +<span class="sourceLineNo">511</span> @Override<a name="line.511"></a> +<span class="sourceLineNo">512</span> public Set<String> getAllWALs() throws ReplicationException {<a name="line.512"></a> +<span class="sourceLineNo">513</span> try {<a name="line.513"></a> +<span class="sourceLineNo">514</span> for (int retry = 0;; retry++) {<a name="line.514"></a> +<span class="sourceLineNo">515</span> int v0 = getQueuesZNodeCversion();<a name="line.515"></a> +<span class="sourceLineNo">516</span> List<ServerName> rss = getListOfReplicators0();<a name="line.516"></a> +<span class="sourceLineNo">517</span> if (rss.isEmpty()) {<a name="line.517"></a> +<span class="sourceLineNo">518</span> LOG.debug("Didn't find a RegionServer that replicates, won't prevent deletions.");<a name="line.518"></a> +<span class="sourceLineNo">519</span> return Collections.emptySet();<a name="line.519"></a> +<span class="sourceLineNo">520</span> }<a name="line.520"></a> +<span class="sourceLineNo">521</span> Set<String> wals = new HashSet<>();<a name="line.521"></a> +<span class="sourceLineNo">522</span> for (ServerName rs : rss) {<a name="line.522"></a> +<span class="sourceLineNo">523</span> for (String queueId : getAllQueues0(rs)) {<a name="line.523"></a> +<span class="sourceLineNo">524</span> wals.addAll(getWALsInQueue0(rs, queueId));<a name="line.524"></a> +<span class="sourceLineNo">525</span> }<a name="line.525"></a> +<span class="sourceLineNo">526</span> }<a name="line.526"></a> +<span class="sourceLineNo">527</span> int v1 = getQueuesZNodeCversion();<a name="line.527"></a> +<span class="sourceLineNo">528</span> if (v0 == v1) {<a name="line.528"></a> +<span class="sourceLineNo">529</span> return wals;<a name="line.529"></a> +<span class="sourceLineNo">530</span> }<a name="line.530"></a> +<span class="sourceLineNo">531</span> LOG.info("Replication queue node cversion changed from %d to %d, retry = %d",<a name="line.531"></a> +<span class="sourceLineNo">532</span> v0, v1, retry);<a name="line.532"></a> +<span class="sourceLineNo">533</span> }<a name="line.533"></a> +<span class="sourceLineNo">534</span> } catch (KeeperException e) {<a name="line.534"></a> +<span class="sourceLineNo">535</span> throw new ReplicationException("Failed to get all wals", e);<a name="line.535"></a> +<span class="sourceLineNo">536</span> }<a name="line.536"></a> +<span class="sourceLineNo">537</span> }<a name="line.537"></a> +<span class="sourceLineNo">538</span><a name="line.538"></a> +<span class="sourceLineNo">539</span> private String getHFileRefsPeerNode(String peerId) {<a name="line.539"></a> +<span class="sourceLineNo">540</span> return ZNodePaths.joinZNode(hfileRefsZNode, peerId);<a name="line.540"></a> +<span class="sourceLineNo">541</span> }<a name="line.541"></a> +<span class="sourceLineNo">542</span><a name="line.542"></a> +<span class="sourceLineNo">543</span> private String getHFileNode(String peerNode, String fileName) {<a name="line.543"></a> +<span class="sourceLineNo">544</span> return ZNodePaths.joinZNode(peerNode, fileName);<a name="line.544"></a> +<span class="sourceLineNo">545</span> }<a name="line.545"></a> +<span class="sourceLineNo">546</span><a name="line.546"></a> +<span class="sourceLineNo">547</span> @Override<a name="line.547"></a> +<span class="sourceLineNo">548</span> public void addPeerToHFileRefs(String peerId) throws ReplicationException {<a name="line.548"></a> +<span class="sourceLineNo">549</span> String peerNode = getHFileRefsPeerNode(peerId);<a name="line.549"></a> +<span class="sourceLineNo">550</span> try {<a name="line.550"></a> +<span class="sourceLineNo">551</span> if (ZKUtil.checkExists(zookeeper, peerNode) == -1) {<a name="line.551"></a> +<span class="sourceLineNo">552</span> LOG.info("Adding peer {} to hfile reference queue.", peerId);<a name="line.552"></a> +<span class="sourceLineNo">553</span> ZKUtil.createWithParents(zookeeper, peerNode);<a name="line.553"></a> +<span class="sourceLineNo">554</span> }<a name="line.554"></a> +<span class="sourceLineNo">555</span> } catch (KeeperException e) {<a name="line.555"></a> +<span class="sourceLineNo">556</span> throw new ReplicationException("Failed to add peer " + peerId + " to hfile reference queue.",<a name="line.556"></a> +<span class="sourceLineNo">557</span> e);<a name="line.557"></a> +<span class="sourceLineNo">558</span> }<a name="line.558"></a> +<span class="sourceLineNo">559</span> }<a name="line.559"></a> +<span class="sourceLineNo">560</span><a name="line.560"></a> +<span class="sourceLineNo">561</span> @Override<a name="line.561"></a> +<span class="sourceLineNo">562</span> public void removePeerFromHFileRefs(String peerId) throws ReplicationException {<a name="line.562"></a> +<span class="sourceLineNo">563</span> String peerNode = getHFileRefsPeerNode(peerId);<a name="line.563"></a> +<span class="sourceLineNo">564</span> try {<a name="line.564"></a> +<span class="sourceLineNo">565</span> if (ZKUtil.checkExists(zookeeper, peerNode) == -1) {<a name="line.565"></a> +<span class="sourceLineNo">566</span> LOG.debug("Peer {} not found in hfile reference queue.", peerNode);<a name="line.566"></a> +<span class="sourceLineNo">567</span> } else {<a name="line.567"></a> +<span class="sourceLineNo">568</span> LOG.info("Removing peer {} from hfile reference queue.", peerNode);<a name="line.568"></a> +<span class="sourceLineNo">569</span> ZKUtil.deleteNodeRecursively(zookeeper, peerNode);<a name="line.569"></a> +<span class="sourceLineNo">570</span> }<a name="line.570"></a> +<span class="sourceLineNo">571</span> } catch (KeeperException e) {<a name="line.571"></a> +<span class="sourceLineNo">572</span> throw new ReplicationException(<a name="line.572"></a> +<span class="sourceLineNo">573</span> "Failed to remove peer " + peerId + " from hfile reference queue.", e);<a name="line.573"></a> +<span class="sourceLineNo">574</span> }<a name="line.574"></a> +<span class="sourceLineNo">575</span> }<a name="line.575"></a> +<span class="sourceLineNo">576</span><a name="line.576"></a> +<span class="sourceLineNo">577</span> @Override<a name="line.577"></a> +<span class="sourceLineNo">578</span> public void addHFileRefs(String peerId, List<Pair<Path, Path>> pairs)<a name="line.578"></a> +<span class="sourceLineNo">579</span> throws ReplicationException {<a name="line.579"></a> +<span class="sourceLineNo">580</span> String peerNode = getHFileRefsPeerNode(peerId);<a name="line.580"></a> +<span class="sourceLineNo">581</span> LOG.debug("Adding hfile references {} in queue {}", pairs, peerNode);<a name="line.581"></a> +<span class="sourceLineNo">582</span> List<ZKUtilOp> listOfOps = pairs.stream().map(p -> p.getSecond().getName())<a name="line.582"></a> +<span class="sourceLineNo">583</span> .map(n -> getHFileNode(peerNode, n))<a name="line.583"></a> +<span class="sourceLineNo">584</span> .map(f -> ZKUtilOp.createAndFailSilent(f, HConstants.EMPTY_BYTE_ARRAY)).collect(toList());<a name="line.584"></a> +<span class="sourceLineNo">585</span> LOG.debug("The multi list size for adding hfile references in zk for node {} is {}",<a name="line.585"></a> +<span class="sourceLineNo">586</span> peerNode, listOfOps.size());<a name="line.586"></a> +<span class="sourceLineNo">587</span> try {<a name="line.587"></a> +<span class="sourceLineNo">588</span> ZKUtil.multiOrSequential(this.zookeeper, listOfOps, true);<a name="line.588"></a> +<span class="sourceLineNo">589</span> } catch (KeeperException e) {<a name="line.589"></a> +<span class="sourceLineNo">590</span> throw new ReplicationException("Failed to add hfile reference to peer " + peerId, e);<a name="line.590"></a> +<span class="sourceLineNo">591</span> }<a name="line.591"></a> +<span class="sourceLineNo">592</span> }<a name="line.592"></a> +<span class="sourceLineNo">593</span><a name="line.593"></a> +<span class="sourceLineNo">594</span> @Override<a name="line.594"></a> +<span class="sourceLineNo">595</span> public void removeHFileRefs(String peerId, List<String> files) throws ReplicationException {<a name="line.595"></a> +<span class="sourceLineNo">596</span> String peerNode = getHFileRefsPeerNode(peerId);<a name="line.596"></a> +<span class="sourceLineNo">597</span> LOG.debug("Removing hfile references {} from queue {}", files, peerNode);<a name="line.597"></a> +<span class="sourceLineNo">598</span><a name="line.598"></a> +<span class="sourceLineNo">599</span> List<ZKUtilOp> listOfOps = files.stream().map(n -> getHFileNode(peerNode, n))<a name="line.599"></a> +<span class="sourceLineNo">600</span> .map(ZKUtilOp::deleteNodeFailSilent).collect(toList());<a name="line.600"></a> +<span class="sourceLineNo">601</span> LOG.debug("The multi list size for removing hfile references in zk for node {} is {}",<a name="line.601"></a> +<span class="sourceLineNo">602</span> peerNode, listOfOps.size());<a name="line.602"></a> +<span class="sourceLineNo">603</span> try {<a name="line.603"></a> +<span class="sourceLineNo">604</span> ZKUtil.multiOrSequential(this.zookeeper, listOfOps, true);<a name="line.604"></a> +<span class="sourceLineNo">605</span> } catch (KeeperException e) {<a name="line.605"></a> +<span class="sourceLineNo">606</span> throw new ReplicationException("Failed to remove hfile reference from peer " + peerId, e);<a name="line.606"></a> +<span class="sourceLineNo">607</span> }<a name="line.607"></a> +<span class="sourceLineNo">608</span> }<a name="line.608"></a> +<span class="sourceLineNo">609</span><a name="line.609"></a> +<span class="sourceLineNo">610</span> private List<String> getAllPeersFromHFileRefsQueue0() throws KeeperException {<a name="line.610"></a> +<span class="sourceLineNo">611</span> List<String> children = ZKUtil.listChildrenNoWatch(zookeeper, hfileRefsZNode);<a name="line.611"></a> +<span class="sourceLineNo">612</span> return children != null ? children : Collections.emptyList();<a name="line.612"></a> +<span class="sourceLineNo">613</span> }<a name="line.613"></a> +<span class="sourceLineNo">614</span><a name="line.614"></a> +<span class="sourceLineNo">615</span> @Override<a name="line.615"></a> +<span class="sourceLineNo">616</span> public List<String> getAllPeersFromHFileRefsQueue() throws ReplicationException {<a name="line.616"></a> +<span class="sourceLineNo">617</span> try {<a name="line.617"></a> +<span class="sourceLineNo">618</span> return getAllPeersFromHFileRefsQueue0();<a name="line.618"></a> +<span class="sourceLineNo">619</span> } catch (KeeperException e) {<a name="line.619"></a> +<span class="sourceLineNo">620</span> throw new ReplicationException("Failed to get list of all peers in hfile references node.",<a name="line.620"></a> +<span class="sourceLineNo">621</span> e);<a name="line.621"></a> +<span class="sourceLineNo">622</span> }<a name="line.622"></a> +<span class="sourceLineNo">623</span> }<a name="line.623"></a> +<span class="sourceLineNo">624</span><a name="line.624"></a> +<span class="sourceLineNo">625</span> private List<String> getReplicableHFiles0(String peerId) throws KeeperException {<a name="line.625"></a> +<span class="sourceLineNo">626</span> List<String> children = ZKUtil.listChildrenNoWatch(this.zookeeper,<a name="line.626"></a> +<span class="sourceLineNo">627</span> getHFileRefsPeerNode(peerId));<a name="line.627"></a> +<span class="sourceLineNo">628</span> return children != null ? children : Collections.emptyList();<a name="line.628"></a> +<span class="sourceLineNo">629</span> }<a name="line.629"></a> +<span class="sourceLineNo">630</span><a name="line.630"></a> +<span class="sourceLineNo">631</span> @Override<a name="line.631"></a> +<span class="sourceLineNo">632</span> public List<String> getReplicableHFiles(String peerId) throws ReplicationException {<a name="line.632"></a> +<span class="sourceLineNo">633</span> try {<a name="line.633"></a> +<span class="sourceLineNo">634</span> return getReplicableHFiles0(peerId);<a name="line.634"></a> +<span class="sourceLineNo">635</span> } catch (KeeperException e) {<a name="line.635"></a> +<span class="sourceLineNo">636</span> throw new ReplicationException("Failed to get list of hfile references for peer " + peerId,<a name="line.636"></a> +<span class="sourceLineNo">637</span> e);<a name="line.637"></a> +<span class="sourceLineNo">638</span> }<a name="line.638"></a> +<span class="sourceLineNo">639</span> }<a name="line.639"></a> +<span class="sourceLineNo">640</span><a name="line.640"></a> +<span class="sourceLineNo">641</span> // will be overridden in UTs<a name="line.641"></a> +<span class="sourceLineNo">642</span> @VisibleForTesting<a name="line.642"></a> +<span class="sourceLineNo">643</span> protected int getHFileRefsZNodeCversion() throws ReplicationException {<a name="line.643"></a> +<span class="sourceLineNo">644</span> Stat stat = new Stat();<a name="line.644"></a> +<span class="sourceLineNo">645</span> try {<a name="line.645"></a> +<span class="sourceLineNo">646</span> ZKUtil.getDataNoWatch(zookeeper, hfileRefsZNode, stat);<a name="line.646"></a> +<span class="sourceLineNo">647</span> } catch (KeeperException e) {<a name="line.647"></a> +<span class="sourceLineNo">648</span> throw new ReplicationException("Failed to get stat of replication hfile references node.", e);<a name="line.648"></a> +<span class="sourceLineNo">649</span> }<a name="line.649"></a> +<span class="sourceLineNo">650</span> return stat.getCversion();<a name="line.650"></a> +<span class="sourceLineNo">651</span> }<a name="line.651"></a> +<span class="sourceLineNo">652</span><a name="line.652"></a> +<span class="sourceLineNo">653</span> @Override<a name="line.653"></a> +<span class="sourceLineNo">654</span> public Set<String> getAllHFileRefs() throws ReplicationException {<a name="line.654"></a> +<span class="sourceLineNo">655</span> try {<a name="line.655"></a> +<span class="sourceLineNo">656</span> for (int retry = 0;; retry++) {<a name="line.656"></a> +<span class="sourceLineNo">657</span> int v0 = getHFileRefsZNodeCversion();<a name="line.657"></a> +<span class="sourceLineNo">658</span> List<String> peers = getAllPeersFromHFileRefsQueue();<a name="line.658"></a> +<span class="sourceLineNo">659</span> if (peers.isEmpty()) {<a name="line.659"></a> +<span class="sourceLineNo">660</span> LOG.debug("Didn't find any peers with hfile references, won't prevent deletions.");<a name="line.660"></a> +<span class="sourceLineNo">661</span> return Collections.emptySet();<a name="line.661"></a> +<span class="sourceLineNo">662</span> }<a name="line.662"></a> +<span class="sourceLineNo">663</span> Set<String> hfileRefs = new HashSet<>();<a name="line.663"></a> +<span class="sourceLineNo">664</span> for (String peer : peers) {<a name="line.664"></a> +<span class="sourceLineNo">665</span> hfileRefs.addAll(getReplicableHFiles0(peer));<a name="line.665"></a> +<span class="sourceLineNo">666</span> }<a name="line.666"></a> +<span class="sourceLineNo">667</span> int v1 = getHFileRefsZNodeCversion();<a name="line.667"></a> +<span class="sourceLineNo">668</span> if (v0 == v1) {<a name="line.668"></a> +<span class="sourceLineNo">669</span> return hfileRefs;<a name="line.669"></a> +<span class="sourceLineNo">670</span> }<a name="line.670"></a> +<span class="sourceLineNo">671</span> LOG.debug("Replication hfile references node cversion changed from %d to %d, retry = %d",<a name="line.671"></a> +<span class="sourceLineNo">672</span> v0, v1, retry);<a name="line.672"></a> +<span class="sourceLineNo">673</span> }<a name="line.673"></a> +<span class="sourceLineNo">674</span> } catch (KeeperException e) {<a name="line.674"></a> +<span class="sourceLineNo">675</span> throw new ReplicationException("Failed to get all hfile refs", e);<a name="line.675"></a> +<span class="sourceLineNo">676</span> }<a name="line.676"></a> +<span class="sourceLineNo">677</span> }<a name="line.677"></a> +<span class="sourceLineNo">678</span>}<a name="line.678"></a>
