ndimiduk commented on a change in pull request #754: HBASE-22978 : Online slow
response log
URL: https://github.com/apache/hbase/pull/754#discussion_r371445755
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File path:
hbase-client/src/main/java/org/apache/hadoop/hbase/client/RawAsyncHBaseAdmin.java
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@@ -3889,4 +3890,72 @@ private void getProcedureResult(long procId,
CompletableFuture<Void> future, int
.call();
}
+ @Override
+ public CompletableFuture<List<SlowLogPayload>>
getSlowLogResponses(List<ServerName> serverNames)
+ throws IOException {
+ CompletableFuture<List<SlowLogPayload>> slowLoadPayloads = null;
+ if (CollectionUtils.isNotEmpty(serverNames)) {
+ for (ServerName serverName : serverNames) {
+ CompletableFuture<List<SlowLogPayload>> slowLogPayloadFromServer =
+ getSlowLogResponseFromServer(serverName);
+ if (slowLoadPayloads == null) {
+ slowLoadPayloads = slowLogPayloadFromServer;
+ continue;
+ }
+ slowLoadPayloads =
slowLoadPayloads.thenCombine(slowLogPayloadFromServer, (l1, l2) -> {
+ List<SlowLogPayload> finalSlowLogPayloads = new ArrayList<>();
Review comment:
We have no clue what the length of these lists will be? How do we expect the
caller to consume the results? Should this be a `LinkedList` instead?
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