Temporary logging to debug corrupted blocks in lucene segments

Signed-off-by: Jugal Chauhan <[email protected]>

Author: jugal-chauhan

RFS/src/main/java/org/opensearch/migrations/bulkload/common/SnapshotShardUnpacker.java

@@ -54,6 +54,21 @@ public Path unpack() {
                         .addArgument(fileMetadata::getName)
                         .addArgument(fileMetadata::getPhysicalName)
                         .log();
+
+                    log.atInfo()
+                        .setMessage("Unpacking File - Name: {}, Physical: {}, Size: {} bytes")
+                        .addArgument(fileMetadata::getName)
+                        .addArgument(fileMetadata::getPhysicalName)
+                        .addArgument(fileMetadata.getLength())
+                        .log();
+                    String name = fileMetadata.getName();
+                    if (name.endsWith(".fdt") || name.endsWith(".fdx") || name.endsWith(".cfs") || name.endsWith(".si")) {
+                        log.atInfo()
+                                .setMessage("Identified important Lucene file: {}")
+                                .addArgument(name)
+                                .log();
+                    }
+
                     try (
                         IndexOutput indexOutput = primaryDirectory.createOutput(
                             fileMetadata.getPhysicalName(),

RFS/src/main/java/org/opensearch/migrations/bulkload/lucene/version_9/LeafReader9.java

@@ -5,10 +5,13 @@
 import org.opensearch.migrations.bulkload.lucene.LuceneLeafReader;
 
 import lombok.AllArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import shadow.lucene9.org.apache.lucene.index.FilterCodecReader;
 import shadow.lucene9.org.apache.lucene.index.LeafReader;
+import shadow.lucene9.org.apache.lucene.index.SegmentCommitInfo;
 import shadow.lucene9.org.apache.lucene.index.SegmentReader;
 
+@Slf4j
 @AllArgsConstructor
 public class LeafReader9 implements LuceneLeafReader {
 
@@ -49,8 +52,16 @@ public String getSegmentName() {
     }
 
     public String getSegmentInfoString() {
-        return getSegmentReader()
-            .getSegmentInfo()
-            .toString();
+        SegmentReader segmentReader = getSegmentReader();
+        SegmentCommitInfo segmentCommitInfo = segmentReader.getSegmentInfo();
+        var info = segmentCommitInfo.info;
+
+        log.info(">>> Segment Name: {}", info.name);
+        log.info(">>> Codec Used: {}", info.getCodec().getName());
+        log.info(">>> Lucene Version: {}", info.getVersion());
+        log.info(">>> Max Doc Count: {}", info.maxDoc());
+        log.info(">>> Attributes: {}", info.getAttributes());
+
+        return segmentCommitInfo.toString();
     }
 }