Examples with PRELOAD_SIZE_UNDER_CHECKPOINT_LOCK org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl.PRELOAD_SIZE_UNDER_CHECKPOINT_LOCK used on opensource projects

Example 1 with PRELOAD_SIZE_UNDER_CHECKPOINT_LOCK

use of org.apache.ignite.internal.processors.cache.IgniteCacheOffheapManagerImpl.PRELOAD_SIZE_UNDER_CHECKPOINT_LOCK in project ignite by apache.

the class GridDhtPartitionDemander method mvccPreloadEntries.

/**
 * Adds mvcc entries with theirs history to partition p.
 *
 * @param topVer Topology version.
 * @param node Node which sent entry.
 * @param p Partition id.
 * @param infos Entries info for preload.
 * @throws IgniteCheckedException If failed.
 */
private void mvccPreloadEntries(AffinityTopologyVersion topVer, ClusterNode node, int p, Iterator<GridCacheEntryInfo> infos) throws IgniteCheckedException {
    if (!infos.hasNext())
        return;
    // Received keys by caches, for statistics.
    IntHashMap<GridMutableLong> receivedKeys = new IntHashMap<>();
    List<GridCacheMvccEntryInfo> entryHist = new ArrayList<>();
    GridCacheContext<?, ?> cctx = grp.sharedGroup() ? null : grp.singleCacheContext();
    // Loop through all received entries and try to preload them.
    while (infos.hasNext() || !entryHist.isEmpty()) {
        ctx.database().checkpointReadLock();
        try {
            for (int i = 0; i < PRELOAD_SIZE_UNDER_CHECKPOINT_LOCK; i++) {
                boolean hasMore = infos.hasNext();
                assert hasMore || !entryHist.isEmpty();
                GridCacheMvccEntryInfo entry = null;
                boolean flushHistory;
                if (hasMore) {
                    entry = (GridCacheMvccEntryInfo) infos.next();
                    GridCacheMvccEntryInfo prev = entryHist.isEmpty() ? null : entryHist.get(0);
                    flushHistory = prev != null && ((grp.sharedGroup() && prev.cacheId() != entry.cacheId()) || !prev.key().equals(entry.key()));
                } else
                    flushHistory = true;
                if (flushHistory) {
                    assert !entryHist.isEmpty();
                    int cacheId = entryHist.get(0).cacheId();
                    if (grp.sharedGroup() && (cctx == null || cacheId != cctx.cacheId())) {
                        assert cacheId != CU.UNDEFINED_CACHE_ID;
                        cctx = grp.shared().cacheContext(cacheId);
                    }
                    if (cctx != null) {
                        mvccPreloadEntry(cctx, node, entryHist, topVer, p);
                        rebalanceFut.onReceivedKeys(p, 1, node);
                        receivedKeys.computeIfAbsent(cacheId, cid -> new GridMutableLong()).incrementAndGet();
                    }
                    entryHist.clear();
                    if (!hasMore)
                        break;
                }
                entryHist.add(entry);
            }
        } finally {
            ctx.database().checkpointReadUnlock();
        }
    }
    updateKeyReceivedMetrics(grp, receivedKeys);
}