ArafatKhan2198 commented on code in PR #4876:
URL: https://github.com/apache/ozone/pull/4876#discussion_r1226745927
##########
hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/api/ContainerEndpoint.java:
##########
@@ -498,46 +499,105 @@ private List<ContainerBlockMetadata> getBlocks(
return blockIds;
}
+ /**
+ * Retrieves the container mismatch insights.
+ *
+ * This method returns a list of ContainerDiscrepancyInfo objects
+ * representing the containers that are present in the Object Manager (OM)
+ * but not in the Storage Container Manager (SCM), and the containers that
+ * are present in the SCM but not in the OM. The returned list is paginated
+ * based on the provided limit and prevKey parameters.
+ *
+ * @param limit The maximum number of container discrepancies to return.
+ * @param prevKey The container ID after which the results are returned.
+ * @return The HTTP response containing the list of ContainerDiscrepancyInfo
+ * objects representing the container discrepancies.
+ */
@GET
@Path("/mismatch")
- public Response getContainerMisMatchInsights() {
+ public Response getContainerMisMatchInsights(
+ @DefaultValue(DEFAULT_FETCH_COUNT) @QueryParam(RECON_QUERY_LIMIT)
+ int limit,
+ @DefaultValue(PREV_CONTAINER_ID_DEFAULT_VALUE)
+ @QueryParam(RECON_QUERY_PREVKEY) long prevKey) {
+ if (prevKey < 0 || limit < 0) {
+ // Send back an empty response
+ return Response.status(Response.Status.NOT_ACCEPTABLE).build();
+ }
+
List<ContainerDiscrepancyInfo> containerDiscrepancyInfoList =
new ArrayList<>();
try {
Map<Long, ContainerMetadata> omContainers =
reconContainerMetadataManager.getContainers(-1, -1);
List<Long> scmNonDeletedContainers =
containerManager.getContainers().stream()
- .filter(containerInfo -> !(containerInfo.getState() ==
- HddsProtos.LifeCycleState.DELETED))
- .map(containerInfo -> containerInfo.getContainerID()).collect(
- Collectors.toList());
+ .filter(containerInfo -> containerInfo.getState() !=
+ HddsProtos.LifeCycleState.DELETED)
+ .map(containerInfo -> containerInfo.getContainerID())
+ .collect(Collectors.toList());
- // Filter list of container Ids which are present in OM but not in SCM.
+ // Filter list of container IDs which are present in OM but not in SCM.
List<Map.Entry<Long, ContainerMetadata>> notSCMContainers =
- omContainers.entrySet().stream().filter(containerMetadataEntry ->
- !(scmNonDeletedContainers.contains(
- containerMetadataEntry.getKey())))
- .collect(
- Collectors.toList());
+ omContainers.entrySet().stream()
+ .filter(
+ containerMetadataEntry -> !scmNonDeletedContainers.contains(
+ containerMetadataEntry.getKey()))
+ .collect(Collectors.toList());
+
+ // Filter containers based on pagination parameters
+ if (prevKey > 0) {
+ int index = 0;
+ while (index < notSCMContainers.size() &&
+ notSCMContainers.get(index).getKey() <= prevKey) {
+ index++;
+ }
+ if (index < notSCMContainers.size()) {
+ notSCMContainers = notSCMContainers.subList(index,
+ Math.min(index + limit, notSCMContainers.size()));
+ } else {
+ notSCMContainers = Collections.emptyList();
+ }
+ } else {
+ notSCMContainers = notSCMContainers.subList(0,
+ Math.min(limit, notSCMContainers.size()));
+ }
notSCMContainers.forEach(nonSCMContainer -> {
ContainerDiscrepancyInfo containerDiscrepancyInfo =
new ContainerDiscrepancyInfo();
containerDiscrepancyInfo.setContainerID(nonSCMContainer.getKey());
containerDiscrepancyInfo.setNumberOfKeys(
nonSCMContainer.getValue().getNumberOfKeys());
- containerDiscrepancyInfo.setPipelines(nonSCMContainer.getValue()
- .getPipelines());
+ containerDiscrepancyInfo.setPipelines(
+ nonSCMContainer.getValue().getPipelines());
containerDiscrepancyInfo.setExistsAt("OM");
containerDiscrepancyInfoList.add(containerDiscrepancyInfo);
});
- // Filter list of container Ids which are present in SCM but not in OM.
+ // Filter list of container IDs which are present in SCM but not in OM.
List<Long> nonOMContainers = scmNonDeletedContainers.stream()
.filter(containerId -> !omContainers.containsKey(containerId))
.collect(Collectors.toList());
+ // Filter containers based on pagination parameters
+ if (prevKey > 0) {
Review Comment:
Done!
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