Examples of com.sleepycat.je.EnvironmentFailureException

com.sleepycat.je.EnvironmentFailureException
Indicates that a failure has occurred that could impact the {@code Environment} as a whole. For failures that impact only the currentoperation and/or transaction, see {@link OperationFailureException}). For an overview of all exceptions thrown by JE, see {@link DatabaseException}.
Depending on the nature of the failure, this exception may indicate that {@link Environment#close} must be called. The application should catch{@code EnvironmentFailureException} and then call {@link Environment#isValid}. If {@code false} is returned, all {@code Environment}handles (instances) must be closed and re-opened in order to run recovery and continue operating. If {@code true} is returned, the {@code Environment} can continue operating without being closed and re-opened.Also note that {@link Environment#isValid} may be called at any time, notjust during exception handling.

The use of the {@link Environment#isValid} method allows JE to determinedynamically whether the failure requires recovery or not, and allows for this determination to change in future releases. Over time, internal improvements to error handling may allow more error conditions to be handled without invalidating the {@code Environment}.

(Although this exception class extends {@link RunRecoveryException}, it does not always indicate that recovery is necessary, as described above. {@code RunRecoveryException} has been deprecated and {@code EnvironmentFailureException} should be used instead.)
If an {@code EnvironmentFailureException} consistently occurs soon afteropening the Environment, this may indicate a persistent problem. It may indicate a system problem or a persistent storage problem. In this case, human intervention is normally required and restoring from a backup may be necessary.

Note that subclasses of {@code EnvironmentFailureException} indicate howto handle the exception in more specific ways.
- If {@code Thread.interrupt} is called for a thread performing JEoperations, a {@link ThreadInterruptedException} is thrown. Sinceinterrupting a thread is intentional, it does not indicate a persistent problem and human intervention is not normally required.
- If an {@code IOException} occurs while writing to the JE log, a{@link LogWriteException} is thrown. Although an {@code IOException} canoccur for different reasons, it is a hint that the disk may be full and applications may wish to attempt recovery after making more disk space available.
- For replicated environments, see the subclasses of {@code EnvironmentFailureException} in the {@link com.sleepycat.je.rep} package formore information. Such exceptions may require special handling.
If {@link Environment#close} is not called after an {@code EnvironmentFailureException} invalidates the {@code Environment}, all subsequent method calls for the {@code Environment} will throw the sameexception. This provides more than one opportunity to catch and handle the specific exception subclass that caused the failure.

              DbLsn.NULL_LSN, DbLsn.NULL_LSN);


        try {
            startAtLastGoodFile(null /*singleFileNum*/);
        } catch (ChecksumException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_CHECKSUM, e);
        }


        trackableEntries = new HashSet<LogEntryType>();
        lastOffsetSeen = new HashMap<LogEntryType, Long>();

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                        if (fileHandle != null) {
                            fileHandle.release();
                        }
                    }
                } catch (IOException e) {
                    throw new EnvironmentFailureException
                        (envImpl, EnvironmentFailureReason.LOG_READ, e);
                }
            }
        }

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             * we're at a file with a valid file header entry.
             */
            lastValidOffset = currentEntryOffset;
            nextUnprovenOffset = nextEntryOffset;
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl,
                 EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        } catch (ChecksumException e) {
            LoggerUtils.fine
                (logger, envImpl,  
                 "Found checksum exception while searching for end of log. " +
                 "Last valid entry is at " + DbLsn.toString
                 (DbLsn.makeLsn(window.currentFileNum(), lastValidOffset)) +
                 " Bad entry is at " +
                 DbLsn.makeLsn(window.currentFileNum(), nextUnprovenOffset));
                 
            DbConfigManager configManager = envImpl.getConfigManager();
            boolean findCommitTxn = 
                configManager.getBoolean
                (EnvironmentParams.HALT_ON_COMMIT_AFTER_CHECKSUMEXCEPTION);
                
            /* Find the committed transactions at the rest the log file. */
            if (findCommitTxn) {
                boolean committedTxnFound = findCommittedTxn();  
                /* If we have found a committed txn. */
                if (committedTxnFound) {
                    throw new EnvironmentFailureException
                        (envImpl, EnvironmentFailureReason.FOUND_COMMITTED_TXN, 
                         "Find committed txn after the corruption point");
                }
            }
        }

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                    return true;
                }
            }
        } catch (EOFException e) {
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        } catch (ChecksumException e) {
            /* Case 2 and 3. */
            LoggerUtils.fine
                (logger, envImpl,

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    public boolean readNextEntry() {
        long saveCurrentEntryOffset = currentEntryOffset;
        try {
            return super.readNextEntryAllowExceptions();
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        } catch (ChecksumException e) {
            resyncReader(DbLsn.makeLsn(window.currentFileNum(),
                                       saveCurrentEntryOffset),
                         dumpCorruptedBounds);

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                 * In production mode, if any exception occurs while logging an
                 * LN, ensure that the environment is invalidated.  This will
                 * also ensure that the txn cannot be committed.
                 */
                if (envImpl.isValid()) {
                    throw new EnvironmentFailureException
                        (envImpl,
                         EnvironmentFailureReason.LOG_INCOMPLETE,
                         "LN could not be logged", e);
                } else {
                    throw e;

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                stateChangeListener.stateChange(stateChangeEvent);
            } catch (Exception e) {
                LoggerUtils.severe(logger, repImpl, 
                                   "State Change listener exception" + 
                                   e.getMessage());
                throw new EnvironmentFailureException
                    (repImpl, EnvironmentFailureReason.LISTENER_EXCEPTION, e);
            }
        }


        /* Make things obvious in thread dumps */

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    public boolean checkErrorListener(Throwable e) {
        if (Boolean.getBoolean(ERROR_LISTENER)) {
            if (!stifleExceptionChatter) {
                System.err.println(name + " " + LoggerUtils.getStackTrace(e));
            }
            new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.TEST_INVALIDATE,
                 "Daemon thread failed during testing", e);
        }


        return true;

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                 * Create the exception to invalidate the environment, but do
                 * not throw it since the handle is invoked in some internal
                 * JVM thread and the exception is not meaningful to the
                 * invoker.
                 */
                new EnvironmentFailureException
                    (envImpl, EnvironmentFailureReason.UNCAUGHT_EXCEPTION, e);
            }
        }

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                             * log.
                             */
                            logManager.flush();
                            fileManager.clear();
                        } catch (IOException e) {
                            throw new EnvironmentFailureException
                                (this, EnvironmentFailureReason.LOG_INTEGRITY,
                                 e);
                        }
                    }
                } else {

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com.sleepycat.je.cleaner.Cleaner

com.sleepycat.je.cleaner.FileProcessor

com.sleepycat.je.cleaner.VerifyUtils

com.sleepycat.je.dbi.CursorImpl

com.sleepycat.je.dbi.DbTree

com.sleepycat.je.dbi.EnvironmentImpl

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com.sleepycat.je.log.FileHeader

com.sleepycat.je.log.FileManager

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