Apache9 commented on a change in pull request #2315:
URL: https://github.com/apache/hbase/pull/2315#discussion_r477157027
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File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/MasterRegistry.java
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@@ -259,17 +282,54 @@ private RegionLocations
transformMetaRegionLocations(GetMetaRegionLocationsRespo
.thenApply(GetClusterIdResponse::getClusterId);
}
- private ServerName transformServerName(GetActiveMasterResponse resp) {
- return ProtobufUtil.toServerName(resp.getServerName());
+ private static boolean hasActiveMaster(GetMastersResponse resp) {
+ List<GetMastersResponseEntry> activeMasters =
+
resp.getMasterServersList().stream().filter(GetMastersResponseEntry::getIsActive).collect(
+ Collectors.toList());
+ return activeMasters.size() == 1;
+ }
+
+ private static ServerName filterActiveMaster(GetMastersResponse resp) throws
IOException {
+ List<GetMastersResponseEntry> activeMasters =
+
resp.getMasterServersList().stream().filter(GetMastersResponseEntry::getIsActive).collect(
+ Collectors.toList());
+ if (activeMasters.size() != 1) {
+ throw new IOException(String.format("Incorrect number of active masters
encountered." +
+ " Expected: 1 found: %d. Content: %s", activeMasters.size(),
activeMasters));
+ }
+ return ProtobufUtil.toServerName(activeMasters.get(0).getServerName());
}
@Override
public CompletableFuture<ServerName> getActiveMaster() {
+ CompletableFuture<ServerName> future = new CompletableFuture<>();
+ addListener(call((c, s, d) -> s.getMasters(c,
GetMastersRequest.getDefaultInstance(), d),
Review comment:
As said on jira, for branch-2.3, we'd better still use the
getActiveMaster call here to keep the wire compatibility.
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