Exemplo n.º 1
0
  private void syncToMe(
      ZkController zkController,
      String collection,
      String shardId,
      ZkNodeProps leaderProps,
      CoreDescriptor cd) {

    // sync everyone else
    // TODO: we should do this in parallel at least
    List<ZkCoreNodeProps> nodes =
        zkController
            .getZkStateReader()
            .getReplicaProps(collection, shardId, cd.getCloudDescriptor().getCoreNodeName());
    if (nodes == null) {
      log.info(ZkCoreNodeProps.getCoreUrl(leaderProps) + " has no replicas");
      return;
    }

    ZkCoreNodeProps zkLeader = new ZkCoreNodeProps(leaderProps);
    for (ZkCoreNodeProps node : nodes) {
      try {
        log.info(
            ZkCoreNodeProps.getCoreUrl(leaderProps)
                + ": try and ask "
                + node.getCoreUrl()
                + " to sync");

        requestSync(
            node.getBaseUrl(), node.getCoreUrl(), zkLeader.getCoreUrl(), node.getCoreName());

      } catch (Exception e) {
        SolrException.log(log, "Error syncing replica to leader", e);
      }
    }

    for (; ; ) {
      ShardResponse srsp = shardHandler.takeCompletedOrError();
      if (srsp == null) break;
      boolean success = handleResponse(srsp);
      if (srsp.getException() != null) {
        SolrException.log(log, "Sync request error: " + srsp.getException());
      }

      if (!success) {
        try {
          log.info(
              ZkCoreNodeProps.getCoreUrl(leaderProps)
                  + ": Sync failed - asking replica ("
                  + srsp.getShardAddress()
                  + ") to recover.");
          if (isClosed) {
            log.info("We have been closed, don't request that a replica recover");
          } else {
            requestRecovery(
                leaderProps,
                ((ShardCoreRequest) srsp.getShardRequest()).baseUrl,
                ((ShardCoreRequest) srsp.getShardRequest()).coreName);
          }
        } catch (Exception e) {
          SolrException.log(
              log,
              ZkCoreNodeProps.getCoreUrl(leaderProps) + ": Could not tell a replica to recover",
              e);
        }
      } else {
        log.info(
            ZkCoreNodeProps.getCoreUrl(leaderProps)
                + ": "
                + " sync completed with "
                + srsp.getShardAddress());
      }
    }
  }
Exemplo n.º 2
0
    public void merge(ResponseBuilder rb, ShardRequest sreq) {

      // id to shard mapping, to eliminate any accidental dups
      HashMap<Object, String> uniqueDoc = new HashMap<>();

      NamedList<Object> shardInfo = null;
      if (rb.req.getParams().getBool(ShardParams.SHARDS_INFO, false)) {
        shardInfo = new SimpleOrderedMap<>();
        rb.rsp.getValues().add(ShardParams.SHARDS_INFO, shardInfo);
      }

      IndexSchema schema = rb.req.getSchema();
      SchemaField uniqueKeyField = schema.getUniqueKeyField();

      long numFound = 0;
      Float maxScore = null;
      boolean partialResults = false;
      List<ShardDoc> shardDocs = new ArrayList();

      for (ShardResponse srsp : sreq.responses) {
        SolrDocumentList docs = null;

        if (shardInfo != null) {
          SimpleOrderedMap<Object> nl = new SimpleOrderedMap<>();

          if (srsp.getException() != null) {
            Throwable t = srsp.getException();
            if (t instanceof SolrServerException) {
              t = ((SolrServerException) t).getCause();
            }
            nl.add("error", t.toString());
            StringWriter trace = new StringWriter();
            t.printStackTrace(new PrintWriter(trace));
            nl.add("trace", trace.toString());
            if (srsp.getShardAddress() != null) {
              nl.add("shardAddress", srsp.getShardAddress());
            }
          } else {
            docs = (SolrDocumentList) srsp.getSolrResponse().getResponse().get("response");
            nl.add("numFound", docs.getNumFound());
            nl.add("maxScore", docs.getMaxScore());
            nl.add("shardAddress", srsp.getShardAddress());
          }
          if (srsp.getSolrResponse() != null) {
            nl.add("time", srsp.getSolrResponse().getElapsedTime());
          }

          shardInfo.add(srsp.getShard(), nl);
        }
        // now that we've added the shard info, let's only proceed if we have no error.
        if (srsp.getException() != null) {
          partialResults = true;
          continue;
        }

        if (docs == null) { // could have been initialized in the shards info block above
          docs = (SolrDocumentList) srsp.getSolrResponse().getResponse().get("response");
        }

        NamedList<?> responseHeader =
            (NamedList<?>) srsp.getSolrResponse().getResponse().get("responseHeader");
        if (responseHeader != null
            && Boolean.TRUE.equals(
                responseHeader.get(SolrQueryResponse.RESPONSE_HEADER_PARTIAL_RESULTS_KEY))) {
          partialResults = true;
        }

        // calculate global maxScore and numDocsFound
        if (docs.getMaxScore() != null) {
          maxScore = maxScore == null ? docs.getMaxScore() : Math.max(maxScore, docs.getMaxScore());
        }
        numFound += docs.getNumFound();

        SortSpec ss = rb.getSortSpec();
        Sort sort = ss.getSort();

        NamedList sortFieldValues =
            (NamedList) (srsp.getSolrResponse().getResponse().get("merge_values"));
        NamedList unmarshalledSortFieldValues = unmarshalSortValues(ss, sortFieldValues, schema);
        List lst = (List) unmarshalledSortFieldValues.getVal(0);

        for (int i = 0; i < docs.size(); i++) {
          SolrDocument doc = docs.get(i);
          Object id = doc.getFieldValue(uniqueKeyField.getName());

          String prevShard = uniqueDoc.put(id, srsp.getShard());
          if (prevShard != null) {
            // duplicate detected
            numFound--;

            // For now, just always use the first encountered since we can't currently
            // remove the previous one added to the priority queue.  If we switched
            // to the Java5 PriorityQueue, this would be easier.
            continue;
            // make which duplicate is used deterministic based on shard
            // if (prevShard.compareTo(srsp.shard) >= 0) {
            //  TODO: remove previous from priority queue
            //  continue;
            // }
          }

          ShardDoc shardDoc = new ShardDoc();
          shardDoc.id = id;
          shardDoc.shard = srsp.getShard();
          shardDoc.orderInShard = i;
          Object scoreObj = lst.get(i);
          if (scoreObj != null) {
            shardDoc.score = ((Integer) scoreObj).floatValue();
          }
          shardDocs.add(shardDoc);
        } // end for-each-doc-in-response
      } // end for-each-response

      Collections.sort(
          shardDocs,
          new Comparator<ShardDoc>() {
            @Override
            public int compare(ShardDoc o1, ShardDoc o2) {
              if (o1.score < o2.score) {
                return 1;
              } else if (o1.score > o2.score) {
                return -1;
              } else {
                return 0; // To change body of implemented methods use File | Settings | File
                // Templates.
              }
            }
          });

      int resultSize = shardDocs.size();

      Map<Object, ShardDoc> resultIds = new HashMap<>();
      for (int i = 0; i < shardDocs.size(); i++) {
        ShardDoc shardDoc = shardDocs.get(i);
        shardDoc.positionInResponse = i;
        // Need the toString() for correlation with other lists that must
        // be strings (like keys in highlighting, explain, etc)
        resultIds.put(shardDoc.id.toString(), shardDoc);
      }

      // Add hits for distributed requests
      // https://issues.apache.org/jira/browse/SOLR-3518
      rb.rsp.addToLog("hits", numFound);

      SolrDocumentList responseDocs = new SolrDocumentList();
      if (maxScore != null) responseDocs.setMaxScore(maxScore);
      responseDocs.setNumFound(numFound);
      responseDocs.setStart(0);
      // size appropriately
      for (int i = 0; i < resultSize; i++) responseDocs.add(null);

      // save these results in a private area so we can access them
      // again when retrieving stored fields.
      // TODO: use ResponseBuilder (w/ comments) or the request context?
      rb.resultIds = resultIds;
      rb.setResponseDocs(responseDocs);

      if (partialResults) {
        rb.rsp
            .getResponseHeader()
            .add(SolrQueryResponse.RESPONSE_HEADER_PARTIAL_RESULTS_KEY, Boolean.TRUE);
      }
    }