Examples with MetadataSnapshot org.elasticsearch.index.store.Store.MetadataSnapshot used on opensource projects

Example 1 with MetadataSnapshot

use of org.elasticsearch.index.store.Store.MetadataSnapshot in project elasticsearch by elastic.

the class IndexShard method doCheckIndex.

private void doCheckIndex() throws IOException {
    long timeNS = System.nanoTime();
    if (!Lucene.indexExists(store.directory())) {
        return;
    }
    BytesStreamOutput os = new BytesStreamOutput();
    PrintStream out = new PrintStream(os, false, StandardCharsets.UTF_8.name());
    if ("checksum".equals(checkIndexOnStartup)) {
        // physical verification only: verify all checksums for the latest commit
        IOException corrupt = null;
        MetadataSnapshot metadata = snapshotStoreMetadata();
        for (Map.Entry<String, StoreFileMetaData> entry : metadata.asMap().entrySet()) {
            try {
                Store.checkIntegrity(entry.getValue(), store.directory());
                out.println("checksum passed: " + entry.getKey());
            } catch (IOException exc) {
                out.println("checksum failed: " + entry.getKey());
                exc.printStackTrace(out);
                corrupt = exc;
            }
        }
        out.flush();
        if (corrupt != null) {
            logger.warn("check index [failure]\n{}", os.bytes().utf8ToString());
            throw corrupt;
        }
    } else {
        // full checkindex
        try (CheckIndex checkIndex = new CheckIndex(store.directory())) {
            checkIndex.setInfoStream(out);
            CheckIndex.Status status = checkIndex.checkIndex();
            out.flush();
            if (!status.clean) {
                if (state == IndexShardState.CLOSED) {
                    // ignore if closed....
                    return;
                }
                logger.warn("check index [failure]\n{}", os.bytes().utf8ToString());
                if ("fix".equals(checkIndexOnStartup)) {
                    if (logger.isDebugEnabled()) {
                        logger.debug("fixing index, writing new segments file ...");
                    }
                    checkIndex.exorciseIndex(status);
                    if (logger.isDebugEnabled()) {
                        logger.debug("index fixed, wrote new segments file \"{}\"", status.segmentsFileName);
                    }
                } else {
                    // only throw a failure if we are not going to fix the index
                    throw new IllegalStateException("index check failure but can't fix it");
                }
            }
        }
    }
    if (logger.isDebugEnabled()) {
        logger.debug("check index [success]\n{}", os.bytes().utf8ToString());
    }
    recoveryState.getVerifyIndex().checkIndexTime(Math.max(0, TimeValue.nsecToMSec(System.nanoTime() - timeNS)));
}