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.


            /* Read the log entry from the log source. */
            return getLogEntryFromLogSource(lsn, logSource,
                                            invisibleReadAllowed);
        } catch (ChecksumException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_CHECKSUM, e);
        }
    }

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        throws DatabaseException {


        try {
            return getLogEntry(lsn);
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl,
                 EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        }
    }

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            /*
             * If invisibleReadAllowed == false, we should not be fetching
             * an invisible log entry.
             */
            if (header.isInvisible() && !invisibleReadAllowed) {
                throw new EnvironmentFailureException
                    (envImpl, EnvironmentFailureReason.LOG_INTEGRITY,
                     "Read invisible log entry at " +
                     DbLsn.getNoFormatString(lsn) + " " + header);
            }


            assert LogEntryType.isValidType(header.getType()):
                "Read non-valid log entry type: " + header.getType();


            /* Read the entry. */
            LogEntry logEntry =
                LogEntryType.findType(header.getType()).getNewLogEntry();
            logEntry.readEntry(envImpl, header, entryBuffer);


            /* For testing only; generate a read io exception. */
            if (readHook != null) {
                try {
                    readHook.doIOHook();
                } catch (IOException e) {
                    /* Simulate what the FileManager would do. */
                    throw new EnvironmentFailureException
                        (envImpl, EnvironmentFailureReason.LOG_READ, e);
                }
            }


            /*

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            entryBuffer.limit(startingPosition + totalSize);
            singleEntryBuffer.put(entryBuffer);
            singleEntryBuffer.position(0);
            return singleEntryBuffer;
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl,
                 EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        } catch (ChecksumException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_CHECKSUM, e);
        } finally {
            logSource.release();
        }
    }

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            /* Add this node's address to the exception message for clarity. */
            e.addErrorMessage("Problem closing handle " + nameIdPair);
            throw e;
        } catch (Exception e) {
            /* Add this node's address to the exception message for clarity. */
            throw new EnvironmentFailureException
                (repImpl,
                 EnvironmentFailureReason.UNEXPECTED_EXCEPTION,
                 "Problem closing handle " + nameIdPair, e);
        } catch (Error E) {
            repImpl.invalidate(E);

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        if (progressListener == null) {
            return;
        }
        if (!progressListener.progress(progress, -1, -1)) {
            throw new EnvironmentFailureException
              (envImpl, EnvironmentFailureReason.PROGRESS_LISTENER_HALT,
              "EnvironmentConfig.recoveryProgressListener: ");      
        }
    }

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            FileHandle handle = getFileHandle(fileNum);
            int logVersion = handle.getLogVersion();
            handle.release();
            return logVersion;
        } catch (FileNotFoundException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_FILE_NOT_FOUND, e);
        } catch (ChecksumException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_CHECKSUM, e);
        }
    }

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            }
        } catch (FileNotFoundException e) {
            /* Handle at higher levels. */
            throw e;
        } catch (IOException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_READ, e);
        }


        return fileHandle;
    }

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            success = true;
        } catch (FileNotFoundException e) {
            /* Handle at higher levels. */
            throw e;
        } catch (IOException e) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_READ,
                 "Couldn't open file " + fileName, e);
        } catch (DatabaseException e) {


            /*

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            throw new LogWriteException(envImpl, e);
        }


        if (bytesWritten != headerLogEntry.getSize() +
            LogEntryHeader.MIN_HEADER_SIZE) {
            throw new EnvironmentFailureException
                (envImpl, EnvironmentFailureReason.LOG_INTEGRITY,
                 "File " + fileName +
                 " was created with an incomplete header. Only " +
                 bytesWritten + " bytes were written.");
        }

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Related Classes of com.sleepycat.je.EnvironmentFailureException

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

com.sleepycat.je.dbi.SortedLSNTreeWalker

com.sleepycat.je.dbi.StartupTracker

com.sleepycat.je.log.FileHeader

com.sleepycat.je.log.FileManager

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