diff --git a/fsqueue.py b/fsqueue.py
index 018f62b..d81d869 100644
--- a/fsqueue.py
+++ b/fsqueue.py
@@ -14,11 +14,18 @@ from pathlib import Path
 from zstandard import ZstdCompressor, ZstdDecompressor
 
 
+class FSQueueError(Exception):
+    def __init__(self, item_id, message):
+        super().__init__(message)
+        self.item_id = item_id
+
+
 class FSState(Enum):
     CREATING = 'creating'
     READY = 'ready'
     LOCKED = 'locked'
     DONE = 'done'
+    ERROR = 'error'
 
 
 class Serializer(ABC):
@@ -107,15 +114,23 @@ class FSQueue:
 
             with open(self._get_path(FSState.LOCKED, path.name), 'rb') as item_file:
                 print("Opening file", path.name)
-                return path.name, self.serializer.deserialize(item_file.read())
+                try:
+                    return path.name, self.serializer.deserialize(item_file.read())
+                except Exception as e:
+                    raise FSQueueError(path.name, 'Error deserializing item') from e
 
     def done(self, item_id: str):
         """
         Mark a task/file as done
         """
-
         self._move(item_id, FSState.LOCKED, FSState.DONE)
 
+    def error(self, item_id: str):
+        """
+        Mark a task/file as in error state
+        """
+        self._move(item_id, FSState.LOCKED, FSState.ERROR)
+
     def unlock_all(self):
         paths = sorted(Path(self._get_dir(FSState.LOCKED)).iterdir(), key=os.path.getmtime)
 
diff --git a/index.py b/index.py
index 5ab8313..8db9b4e 100644
--- a/index.py
+++ b/index.py
@@ -16,8 +16,11 @@ import mmh3
 import pandas as pd
 from zstandard import ZstdCompressor, ZstdDecompressor, ZstdError
 
-NUM_PAGES = 8192
-PAGE_SIZE = 512
+# NUM_PAGES = 8192
+# PAGE_SIZE = 512
+NUM_PAGES = 25600
+PAGE_SIZE = 4096
+
 
 NUM_INITIAL_TOKENS = 50
 
diff --git a/indexcc.py b/indexcc.py
index 574be5a..efd6299 100644
--- a/indexcc.py
+++ b/indexcc.py
@@ -1,14 +1,21 @@
 """
 Index data downloaded from Common Crawl
 """
+import logging
+import sys
+from logging import getLogger
 
 import spacy
 
-from fsqueue import FSQueue, GzipJsonRowSerializer
+from fsqueue import FSQueue, GzipJsonRowSerializer, FSQueueError
 from index import TinyIndexer, index_titles_and_urls, PAGE_SIZE, NUM_PAGES, Document
 from paths import INDEX_PATH, DATA_DIR, COMMON_CRAWL_TERMS_PATH
 
 
+logging.basicConfig(level=logging.DEBUG, stream=sys.stdout)
+logger = getLogger(__name__)
+
+
 def index_common_craw_data():
     nlp = spacy.load("en_core_web_sm")
 
@@ -19,13 +26,22 @@ def index_common_craw_data():
 
 def get_common_crawl_titles_and_urls():
     input_queue = FSQueue(DATA_DIR, 'search-items', GzipJsonRowSerializer())
+    input_queue.unlock_all()
     while True:
-        next_item = input_queue.get()
+        try:
+            next_item = input_queue.get()
+        except FSQueueError as e:
+            logger.exception(f'Error with item {e.item_id}')
+            input_queue.error(e.item_id)
+            continue
         if next_item is None:
+            logger.info('Not more items to process, stopping')
             break
         item_id, items = next_item
+        logger.info(f'Processing item {item_id}')
         for url, title, extract in items:
             yield title, url
+        input_queue.done(item_id)
 
 
 if __name__ == '__main__':