[teiid-issues] [JBoss JIRA] (TEIID-3422) Setting more than 513MB for buffer-service-max-storage-object-size, OOME occurs at org.teiid.common.buffer.impl.BufferFrontedFileStoreCache.initialize()

[hisao furuichi (JIRA)]

hisao furuichi created TEIID-3422:
-------------------------------------

             Summary: Setting more than 513MB for buffer-service-max-storage-object-size, OOME occurs at org.teiid.common.buffer.impl.BufferFrontedFileStoreCache.initialize()
                 Key: TEIID-3422
                 URL: https://issues.jboss.org/browse/TEIID-3422
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: 8.7
         Environment: JBoss DV 6.0, 6.1
            Reporter: hisao furuichi
            Assignee: Steven Hawkins


Setting more than 513MB for buffer-service-max-storage-object-size, OOME occurs at org.teiid.common.buffer.impl.BufferFrontedFileStoreCache.initialize().

One of our user needs to set more than 512MB for buffer-service-max-storage-object-size to avoid TEIID30001[1], this limitation becomes a critical issue for them.

Additional Information:
- By taking look at the source code[2], if the value of maxStorageObjectSize is more than equals with 536870912, the loop becomes infinit, and will cause OOME.

[1]
TEIID30001 Max block number exceeded by 233,144 21,422,155. Increase the maxStorageObjectSize to support larger storage objects.  Alternatively you could make the processor batch size smaller.

[2]teiid/engine/src/main/java/org/teiid/common/buffer/impl/BufferFrontedFileStoreCache.java
===
public static final long MAX_ADDRESSABLE_MEMORY = 1l<<(ADDRESS_BITS+LOG_BLOCK_SIZE);
~~
static final int BLOCK_SIZE = 1 << LOG_BLOCK_SIZE;
~~
public void initialize() throws TeiidComponentException {
~~
  List<BlockStore> stores = new ArrayList<BlockStore>();
  int size = BLOCK_SIZE;
  int files = 32; //this allows us to have 64 terabytes of smaller block sizes
  do {
    stores.add(new BlockStore(this.storageManager, size, 30, files));
    size <<=1;
    if (files > 1) {
      files >>= 1;
    }
  } while ((size>>1) < maxStorageObjectSize);
~~
===



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