sonatype-lift[bot] commented on code in PR #1302: URL: https://github.com/apache/solr/pull/1302#discussion_r1081460073
########## solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java: ########## @@ -198,88 +198,94 @@ public ManagedIndexSchema create( this.loader = config.getResourceLoader(); InputStream schemaInputStream = null; - if (null == resourceName) { - resourceName = IndexSchema.DEFAULT_SCHEMA_FILE; - } - - int schemaZkVersion = -1; - if (!(loader instanceof ZkSolrResourceLoader)) { - schemaInputStream = readSchemaLocally(); - } else { // ZooKeeper - final ZkSolrResourceLoader zkLoader = (ZkSolrResourceLoader) loader; - final SolrZkClient zkClient = zkLoader.getZkController().getZkClient(); - final String managedSchemaPath = lookupZKManagedSchemaPath(); - managedSchemaResourceName = - managedSchemaPath.substring(managedSchemaPath.lastIndexOf("/") + 1); // not loving this - Stat stat = new Stat(); - try { - // Attempt to load the managed schema - byte[] data = zkClient.getData(managedSchemaPath, null, stat, true); - schemaZkVersion = stat.getVersion(); - schemaInputStream = - new ZkSolrResourceLoader.ZkByteArrayInputStream(data, managedSchemaPath, stat); - loadedResource = managedSchemaResourceName; - warnIfNonManagedSchemaExists(); - } catch (InterruptedException e) { - // Restore the interrupted status - Thread.currentThread().interrupt(); - log.warn("", e); - } catch (KeeperException.NoNodeException e) { - log.info( - "The schema is configured as managed, but managed schema resource {} not found - loading non-managed schema {} instead", - managedSchemaResourceName, - resourceName); - } catch (KeeperException e) { - String msg = "Error attempting to access " + managedSchemaPath; - log.error(msg, e); - throw new SolrException(ErrorCode.SERVER_ERROR, msg, e); + try { + if (null == resourceName) { + resourceName = IndexSchema.DEFAULT_SCHEMA_FILE; } - if (null == schemaInputStream) { - // The managed schema file could not be found - load the non-managed schema + + int schemaZkVersion = -1; + if (!(loader instanceof ZkSolrResourceLoader)) { + schemaInputStream = readSchemaLocally(); + } else { // ZooKeeper + final ZkSolrResourceLoader zkLoader = (ZkSolrResourceLoader) loader; + final SolrZkClient zkClient = zkLoader.getZkController().getZkClient(); + final String managedSchemaPath = lookupZKManagedSchemaPath(); + managedSchemaResourceName = + managedSchemaPath.substring(managedSchemaPath.lastIndexOf("/") + 1); // not loving this + Stat stat = new Stat(); try { - schemaInputStream = loader.openResource(resourceName); - loadedResource = resourceName; - shouldUpgrade = true; - } catch (IOException e) { + // Attempt to load the managed schema + byte[] data = zkClient.getData(managedSchemaPath, null, stat, true); + schemaZkVersion = stat.getVersion(); + schemaInputStream = + new ZkSolrResourceLoader.ZkByteArrayInputStream(data, managedSchemaPath, stat); + loadedResource = managedSchemaResourceName; + warnIfNonManagedSchemaExists(); + } catch (InterruptedException e) { + // Restore the interrupted status + Thread.currentThread().interrupt(); + log.warn("", e); + } catch (KeeperException.NoNodeException e) { + log.info( + "The schema is configured as managed, but managed schema resource {} not found - loading non-managed schema {} instead", + managedSchemaResourceName, + resourceName); + } catch (KeeperException e) { + String msg = "Error attempting to access " + managedSchemaPath; + log.error(msg, e); + throw new SolrException(ErrorCode.SERVER_ERROR, msg, e); + } + if (null == schemaInputStream) { + // The managed schema file could not be found - load the non-managed schema try { - // Retry to load the managed schema, in case it was created since the first attempt - byte[] data = zkClient.getData(managedSchemaPath, null, stat, true); - schemaZkVersion = stat.getVersion(); - schemaInputStream = new ByteArrayInputStream(data); - loadedResource = managedSchemaPath; - warnIfNonManagedSchemaExists(); - } catch (Exception e1) { - if (e1 instanceof InterruptedException) { - Thread.currentThread().interrupt(); // Restore the interrupted status + schemaInputStream = loader.openResource(resourceName); + loadedResource = resourceName; + shouldUpgrade = true; + } catch (IOException e) { + try { + // Retry to load the managed schema, in case it was created since the first attempt + byte[] data = zkClient.getData(managedSchemaPath, null, stat, true); + schemaZkVersion = stat.getVersion(); + schemaInputStream = new ByteArrayInputStream(data); + loadedResource = managedSchemaPath; + warnIfNonManagedSchemaExists(); + } catch (Exception e1) { + if (e1 instanceof InterruptedException) { + Thread.currentThread().interrupt(); // Restore the interrupted status + } + final String msg = + "Error loading both non-managed schema '" + + resourceName + + "' and managed schema '" + + managedSchemaResourceName + + "'"; + log.error(msg, e); + throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, msg, e); } - final String msg = - "Error loading both non-managed schema '" - + resourceName - + "' and managed schema '" - + managedSchemaResourceName - + "'"; - log.error(msg, e); - throw new SolrException(SolrException.ErrorCode.SERVER_ERROR, msg, e); } } } + InputSource inputSource = new InputSource(schemaInputStream); + inputSource.setSystemId(SystemIdResolver.createSystemIdFromResourceName(loadedResource)); Review Comment: <picture><img alt="7% of developers fix this issue" src="https://lift.sonatype.com/api/commentimage/fixrate/7/display.svg"></picture> đŦ 3 similar findings have been found in this PR --- *THREAD_SAFETY_VIOLATION:* Read/Write race. Non-private method `ManagedIndexSchemaFactory.create(...)` reads without synchronization from `this.loadedResource`. Potentially races with write in method `ManagedIndexSchemaFactory.create(...)`. Reporting because this access may occur on a background thread. --- <details><summary><b>đ Expand here to view all instances of this finding</b></summary><br/> <div align=\"center\"> | **File Path** | **Line Number** | | ------------- | ------------- | | solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java | [207](https://github.com/apache/solr/blob/cd4923ff78ae43d80b2b43029ff282e5322a8e13/solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java#L207) | | solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java | [280](https://github.com/apache/solr/blob/cd4923ff78ae43d80b2b43029ff282e5322a8e13/solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java#L280) | | solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java | [208](https://github.com/apache/solr/blob/cd4923ff78ae43d80b2b43029ff282e5322a8e13/solr/core/src/java/org/apache/solr/schema/ManagedIndexSchemaFactory.java#L208) | <p><a href="https://lift.sonatype.com/results/github.com/apache/solr/01GQ58R7X279C7SKRG4CCB9H9B?t=Infer|THREAD_SAFETY_VIOLATION" target="_blank">Visit the Lift Web Console</a> to find more details in your report.</p></div></details> --- <details><summary><b>âšī¸ Learn about @sonatype-lift commands</b></summary> You can reply with the following commands. 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